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Best Fish Finder Reviews in 2020 – Complete Buyer’s Guide

Best Fish Finder Reviews in 2020 – Complete Buyer’s Guide

Last updated on December 18, 2020 By Steven Mark

Do you love to fish out of your kayak or boat? Are you doing more fishing than catching? Maybe it’s time for you to up to your fishing game. You need to pick the best fish finder reviews for the money.

What is the best fish finder in the market today? This is a question that even the most experienced angler will likely find difficult to answer. With there are many fish finder units available in the market, it can really be tough to pick just one model.

Table of Contents

  • Comparisons of 15 Best Fish Finders in 2020
  • Top 15 Best Fish Finder Reviews in 2020
    • 1. Garmin Striker 5cv GPS Fishfinder
    • 2. Humminbird Helix 7 Chirp DI GPS G2 Fish Finder
    • 3. Garmin Striker 7SV Fish Finder
    • 4. Humminbird Helix 5 Fish Finder
    • 5. Garmin Striker 4 GPS Fish Finder
    • 6. ReelSonar Wireless Smart Fish Finder
    • 7. Venterior Portable Handheld Fish Finder
    • 8. Garmin Striker 4cv Fish Finder
    • 9. RICANK Portable Fish Finder
    • 10. Deeper Start Smart Fish Finder
    • 11. JOYLOG Smart Sonar Fish Finder
    • 12. Lucky Smart Fish Finder
    • 13. Lowrance Hook-3X Sonar Fishfinder
    • 14. Raymarine Dragonfly Sonar GPS Fishfinder
    • 15. Raymarine Dragonfly-4 Pro Fishfinder
  • How Fish Finders Work – Step by Step Guide
    • 1 The Interface
    • 2 Fish ID Settings
    • 3 Auto Depth Features
    • 4 Depth Cursors
    • 5 Zoom Features
    • 6 Programmable Controls
    • 7 Mounts
  • Things to Consider When You Look for the Best Fish Finder
    • Price
    • Portable or Fixed
    • Display
    • Transducer
    • GPS
    • Manufacturer
    • Comfort and Convenience
    • Scanning
    • Design and Durability
    • Wi-Fi
  • How to Use Fish Finder – Beginner to Advance Guide
    • Zoom Features
    • Transom-Mount Transducer
    • Tuning Features
    • Understanding the Interface
  • Conclusion
  • Relevant Resources

Comparisons of 15 Best Fish Finders in 2020

IMAGENAMEFEATURESPRICE
Garmin Striker Plus 5cvGarmin Striker Plus 5cv
  • Weight: 1 pound
  • Display Size: 5-inch
  • Dimension: 7.4 x 2.1 x 4.5 inches
Check Price
Humminbird Helix 7Humminbird Helix 7 Fish Finder
  • Weight: 3.1 pounds
  • Display Size: 7-inch
  • Max Depth: 350 ft (DI), 600 ft (2500 ft with optional purchase transducer)
  • Dimension: 1.1 x 10.5 x 5.8 inches
Check Price
Garmin Striker 7SVGarmin Striker 7SV
  • Weight: 1.7 pounds
  • Display Size: 7-inch
  • Dimension: 9.3 x 2.3 x 5.5 inches
  • Warranty: 1-Year Consumer Limited Warranty
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Humminbird Helix 5Humminbird Helix 5 Fish Finder
  • Weight: 2.5 Pounds
  • Display Size: 5-inch
  • Max Depth: 1500 ft & 2500 ft
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Garmin Striker 4Garmin Striker 4
  • Weight: 8 ounces
  • Display Size: 3.5-inch
  • Max Depth: 1,600 ft freshwater, 750 ft saltwater
  • Dimension: 3.6 x 1.6 x 5.9 inches
  • Warranty: 1-Year Consumer Limited Warranty
Check Price
ReelSonar iBobberReelSonar iBobber Fish Finder
  • Weight: 0.16 ounces
  • Max Depth: 135 ft
  • Dimension: 2 x 2 x 1 inches
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Venterior Portable Fish FinderVenterior Portable Fish Finder
  • Weight: 1.09 pounds
  • Max Depth: 328 ft
  • Dimension: 9.6 x 2.2 x 5.9 inches
  • Warranty: 2-Years Warranty
Check Price
Garmin Striker 4cvGarmin Striker 4cv
  • Weight: 8 ounces
  • Display Size: 3.5-inch
  • Max Depth: 1,750 ft freshwater, 830 ft saltwater,
  • Dimension: 3.6 x 1.6 x 5.9 inches
Check Price
RICANK Portable Fish FinderRICANK Portable Fish Finder
  • Weight: 1.3 pounds
  • Max Depth: 328 ft
  • Dimension: 10.6 x 6.7 x 2.4 inches
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Deeper SmartDeeper Smart Fish Finder
  • Weight: 2.88 ounces
  • Max Depth: 128 ft
  • Dimension: 4.3 x 3.2 x 4.3 inches
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JOYLOG Smart SonarJOYLOG Smart Sonar Fish Finder
  • Weight: 12.3 ounces
  • Max Depth: 131 ft
  • Dimension: 4.8 x 4.1 x 2.7 inches
Check Price
Lucky Smart Fish FinderLucky Smart Fish Finder
  • Weight: 2.88 ounces
  • Max Depth: 147 ft
  • Dimension: 2.8 x 2.8 x 2.8 inches
Check Price
Lowrance Hook-3X SonarLowrance Hook-3X Sonar
  • Weight: 4 pounds
  • Display Size: 3-inch
  • Dimension: 6.5 x 1.9 x 3.7 inches
Check Price
Raymarine DragonflyRaymarine Dragonfly Fishfinder
  • Weight: 4.41 pounds
  • Display Size: 5-inch
  • Dimension: 14 x 10 x 5 inches
Check Price
Raymarine Dragonfly-4 Pro SonarRaymarine Dragonfly-4 Pro Sonar
  • Weight: 1.45 pounds
  • Display Size: 4-inch
  • Dimension: 13.8 x 13.8 x 13.8 inches
Check Price

Top 15 Best Fish Finder Reviews in 2020

1. Garmin Striker 5cv GPS Fishfinder

Garmin Striker Plus 5cv, Best Fish FinderLike its cousin Striker 4DV, the Garmin Striker 5cv has a very compact and rugged design. It also has high sensitivity GPS, waypoint map, CHIRP sonar, and a built-in flasher. But it beats its cousin in many facets. One is the depth range.

The 5cv has a depth range of 1,100 feet in saltwater compared to just the 800 feet of the 4DV. It is also capable of scanning up to 2300 feet in freshwater compared to just the 1,100 of the other Garmin model.

And it has a bigger, 5-inch screen. We felt that with more space, the screen is able to show more data like depth, scanning sonar, down view sonar and waypoint views. We also love the scaling feature that leads to the uninterrupted image when the unit changes frequencies.

Similar to the Striker 4DV, this unit doesn’t have a user’s guide. You would have to figure out how to use it. This doesn’t sit well with most of its users, especially those who found the waypoint map quite difficult to use. Still, this could be the best depth finder unit today.

Strengths
  • Compact and rugged design
  • Big 5 inch screen
  • Scaling feature
Weaknesses
  • Lack of instruction manual makes it difficult to use
Check Customer Reviews

Also Read: Best Garmin Fish Finder Reviews of 2020 – Step By Step Buying Guide

2. Humminbird Helix 7 Chirp DI GPS G2 Fish Finder

Humminbird Helix 7 Fish FinderThe Humminbird Helix 7 shares some similarities with its cousin the Helix 5. Both units are packed with features like GPS, sonar, side, and down imaging. It is also non-networkable like the Helix 5.

However, the Helix 7 features a glass bonded display that is a lot better than the plastic lens used on the Helix 5. It also has an 800 x 480 pixel, 256 color LED backlit display. According to Humminbird, the brightness display of this unit is 1500 nits. Basically, very bright.

It also has a 2xD-RAM memory which means it can draw maps faster. The unit also refreshes its screen at a faster rate. We like how Humminbird introduced a gimbal mounting bracket for the Helix. The said bracket is a lot better than the mounting system found in its older models.

Aside from offering very advanced features despite its low price, the Helix 7 has been getting best fish finder reviews for being sturdy. The issues raised against this fish finder can be dismissed as being petty, like the transducer plug mount having a tendency to loosen up, or the non-inclusion of a case or cover.

Strengths
  • It has lots of features
  • It is relatively affordable
  • It’s very sturdy
Weaknesses
  •  Takes a while to get used to
Check Customer Reviews

3. Garmin Striker 7SV Fish Finder

Garmin Striker 7SV with transducer, Best Fish FinderDo you wish to get a best fish finder with advanced features like GPS and CHIRP sonar but hesitant to pay for fancy maps? If so, consider getting the Garmin Striker 7SV. This unit has a 7-inch screen with a high 480 x 800 pixel resolution.

It offers 2D, side, and down imaging features as well as GPS and CHIRP sonar. It doesn’t have preloaded maps, though. But if you are a small lake fisherman who doesn’t need those maps, then you wouldn’t really be missing that feature.

We like the brilliant backlit display of this unit that makes it very readable even on the sunniest of days. With enough space, the screen is able to show multiple sharp images simultaneously.

The built-in flasher, meanwhile, is very useful in stationary fishing. In case the powerful sonar imaging feature of the 7SV can’t spot fish, you can turn to its GPS tracking. You can also note landmarks like natural features on the unit for additional guidance. Aside from the maps, user’s guide is something conspicuously missing in this product.

Strengths
  • Fast GPS
  • Brilliant screen
  • Long battery life
Weaknesses
  • No instruction manual
Check Customer Reviews

4. Humminbird Helix 5 Fish Finder

Humminbird HELIX 5 Fish Finder, Best Budget Fish FinderThe Humminbird Helix 5 is an enticing option for novice anglers. It features side and down imaging on top of GPS, but is offered at a relatively low price. The Helix 5 has a 5 inch display that has a landscape orientation. It has an excellent 800 x 480 pixel resolution.

Not surprisingly, a lot of reviewers have pointed out that the high resolution display of this unit is a reason why they’re happy with the Helix 5. Mounting the Helix 5 is done through a plastic gimbal mount. This replaces the old, quick disconnect mounting system that Humminbird used for so many years.

It also features a single microSD card slot located on its left side. This may be packed in features but the Helix 5 isn’t networkable. This may have been due to Humminbird’s desire to keep this model affordable. Overall this is still one of the best fishfinders in terms of functions and price. It doesn’t have the steepest price but it is loaded in features that should keep the techie user contented.

Strengths
  • Compact and portable
  • Excellent resolution
  • Easy to mount and install
Weaknesses
  • It’s not networkable
  • It has no instruction manual
Check Customer Reviews

5. Garmin Striker 4 GPS Fish Finder

Garmin Striker 4 with Transducer, GPS FishfinderThis is a small, portable, and affordable fish finder with CHIRP sonar capability. We recommend this to anglers who want a CHIRP fish finder but don’t want to spend more on other advanced navigation features.

This unit comes with a transducer. It is very affordable and makes a great addition to any small boat or kayak. The Garmin Striker 4 has a rugged design. It is water proof, and according to Garmin, can withstand immersions of up to 1 meter of fresh water.

It has a small, 3.5-inch display with a 480 x 320 pixel resolution. It’s not top of the line but you should have no problems reading it even in direct sunlight. Because of the relatively small display, you can only view two panels or application on the screen.

Arguably the biggest selling point of the Striker 4 is its CHIRP sonar. It gives more power and clarity to the images displayed by the Striker 4. With it, you can see clearer images with less clutter. You will be able to see fishes individually, even when they are close together. Another comment is that it doesn’t drain much of its fishing battery. Others feel that this model is a steal given its advanced features.

Strengths
  • CHIRP sonar.
  • Easy to use.
  • Relatively affordable.
Weaknesses
  • It doesn’t work when the boat goes past 35mph.
Check Customer Reviews

6. ReelSonar Wireless Smart Fish Finder

ReelSonar Smart Fish Finder, Best affordable fish finderSuitable for shore, dock, and kayak fishing, this smart fish finder is one of the high-tech designs I use. As one of the best kayak fish finders, it comes with plenty of features adapted for smartphone connectivity. Among them, you’ll find its Bluetooth technology.

It instantly synchronizes scans with the smartphone in the 100 feet range. At the same time, the smart fishfinder comes with those sonar functions which are so useful for us fisherman. It maps out the waterbed.

The advantage of the smartphone display is that this function even allows users to save certain scans or take screenshots of their favorite fish spots and compare them through the seasons. Other specific data can also be saved. For example, I always note weather conditions and temperature whenever I’m fishing so that I can come back and analyze the data for better fishing predictions.

The readings of the fish finder are very accurate down to a depth of 135 feet. With such accurate scans, I know that I can always rely on the scanner for a quick look at what fish may be found in the area. At the same time, I also know that the battery life of the fish finder is a bit longer since I use the screen of the smartphone to view data. Its battery lasts up to 10 hours.

Strengths
  • Good accuracy down to 135 feet
  • Compatible with Android and iOs smartphones
  • Shows weather data
Weaknesses
  • Inaccurate on small fish
Check Customer Reviews

7. Venterior Portable Handheld Fish Finder

Venterior VT-FF001 Fish Finder, Handheld FishfinderThis fish finder features a highly sensitive sensor that can enable users to view fishes and other structures better. Aside from the fish finder, the package includes a transducer with 25 foot cable, a removable transducer float with a rubber stopper, neck strap, and stainless bolt and wing nut.

The 25 foot cable that comes with the transducer can be advantageous or disadvantageous. With its length, users can drop it off a bridge or float it out on a lake or stream. They don’t need to have a boat to use it. But for those who have a boat, the extra-long cable can be a nuisance.

However, the biggest drawback of this fish finder is that it is not waterproof. While Venterior says it has a waterproof design, many best fish finder reviews experts say the screen will get foggy when it is exposed to some moisture. Another complaint is that it doesn’t remember the setting that you last used. Thus when you switch from meter (the default setting) to feet, the unit will go back to meter when you turn it off.

Strengths
  • It is affordable
  • It is easy to use
  • It’s fairly accurate
Weaknesses
  • It is not waterproof
  • The 25 foot long transducer cable can be very annoying
Check Customer Reviews

8. Garmin Striker 4cv Fish Finder

Garmin Striker 4cv, best cheap fish finderThe Garmin Striker 4cv is a compact, budget friendly GPS-enabled fish finder. It also features waypoint map, CHIRP sonar, and a built-in flasher that is ideal for ice fishing. The Striker 4cv is very compact that you should have no problems fitting it in your kayak or boat. The unit, in fact, weighs a mere 8 ounces.

The screen measures 3.5 inches diagonally, with a clear 480 x 320 pixel resolution. A cluster of control buttons sits next to it. We like that it comes with a swivel/tilt mount that allows users to install it in any watercraft.

There’s also a transducer that goes along with it for producing and gathering sonar pulses. The Striker 4cv offers max penetration of 1,750 feet in freshwater, and around 800 feet in saltwater. We think that’s very solid given its price.

Aside from sonar readings, the Striker 4cv has a waypoint map. It lets users label rich fishing spots on the screens. And with its GPS capabilities, the unit is able to visually trace the user’s direction and distance across the water. We feel that the lack of maps is the only factor that prevents the Striker 4cv from being the best fish finder.

Strengths
  • Fast GPS
  • Easy to use
  • Compact and rugged design
Weaknesses
  • It has no maps
Check Customer Reviews

9. RICANK Portable Fish Finder

RICANK Fish Finder, Best Fish FinderAs one of the best cheap fish finders, it offers the basics without too many extras. Some similar designs have been seen on the market. But the best part about its display is how the data is spread out.

It has a menu system similar to smartphones with pictograms on top of the screen for all major functions. The fish finder even has a sensitivity indicator. There are various settings you can try for sensitivity. It can improve accuracy. But sensitivity settings may also prove useful in better subjects separation.

Some rocks have been known to be shown as fish with other fish finders. Weed is also shown on the screen. Next to the fish size pictogram, users can see the weed as well.  But water depth is also clearly shown in numbers in the top right corner of the screen.

Practically, all of the features essential to a fish finder are included in the pack. A fish alarm is also included. I know this function is useful. It allows you to even look away. For my benefit, I like the fact that I don’t need to be watching it all the time.

Strengths
  • Shows water depth
  • Made with sensitivity adjustments
  • Shows fish size
Weaknesses
  • No backlit display
Check Customer Reviews

10. Deeper Start Smart Fish Finder

Deeper Smart Fish Finder, best cheap fish finderThis device can be the best portable fish finder when looking for the latest technology. It has 3 fish pictograms, suitable for various size fishes. I know these pictograms can be subjective at times, I’ve tried them on my own. But in general, they offer a better perspective to the size and even species of fish.

But what I like the most is its WiFi connectivity. It doesn’t utilize cellular data. This way, even if I’m not going to pay for a data plan on my fishing phone, I’m still able to use it reliably. The cast fish finder might be a hundred feet away from my kayak and it utilizes the best connectivity portal for most. I’d say it’s better than Bluetooth.

With a cast range of 165 feet for reliable data transfer, it is also arguably a bit better than its competition. I’d see this as an upgrade from a cheap fish finder as a result. But everyday life with it is not as complicated as many expect.

It charges via USB. This is why I always charge mine just before leaving the house. Under normal circumstances, its battery lasts up to 6 hours. But the battery life is considerably shorted in lower temperatures such as when ice fishing.

Strengths
  • Compact casting design
  • Connectivity range of up to 165 feet
  • Compatible with smartphones
Weaknesses
  • 0,9” target separation
Check Customer Reviews

11. JOYLOG Smart Sonar Fish Finder

JOYLOG Smart Sonar Fish FinderAs one of the best budget fish finders, Joylog’s device works with all types of fishing. With a range of up to 40 meters, it transmits topographic maps to smartphones. At first, you need to pair it with your smartphone. Afterward, the pairing becomes automatic whenever you use the fish finder.

Other features include measuring water temperature. It may be useful to know about certain temperatures. Bass is one of my favorites and I stay within normal 50 to 85 degrees temperature range for the best results. Automation is also important for a fish finder. It starts and stops automatically which means you can entirely focus on fishing.

The high-resolution images are another reason why I’d consider it over similar devices as well. But since the images run on my smartphone, they are also instant with no lag. Some fish finders with dedicated screens are known for their slower software response. This is not the case when running the app on the smartphone.

Charging the fish finder is made through USB. Whenever its bottom is red, it’s a sign that the fish finder is charging. Whenever it turns green, it’s a sign that the fish finder is fully charger and that it can be used for your next fishing adventure.

Strengths
  • Designed for casting
  • Runs on Android and iOs smartphones
  • 40m detection depth limit
Weaknesses
  • Sharp detection angle of 30 degrees
Check Customer Reviews

12. Lucky Smart Fish Finder

Lucky Smart Fish Finder, Best Cheap Fish FinderWith a large 90-degree detection angle, the best fish finder nominee represents a casting design. It connects to smartphones using WiFi technology. But it is a design specifically made for the dedicated user. Unlike most of its affordable alternatives, its accuracy scans are not as limited for depth.

With a depth range of 45 meters or 147 feet, it is a bit more capable than similar alternatives. I’d use it on the most demanding lakes where kayaks take you further in. The fish finder also comes with an included alarm function. Sometimes I stop to take a break.

Other times I simply prefer to let the device do all the work and simply alert me whenever I pass over an area with fish. In terms of drawbacks, I’ not seeing it as the best solution for ice fishing. Lucky has better options for ice fishing. They are insulated better against low temperatures.

But the fishing community also appreciates its language support. It works for international users with local data and language support.  This also means its temperature and distance readings are supported by international users. For example, it measures temperature in both Celsius and Fahrenheit degrees.

Battery life is also good. Up to 6 hours on a single charge are expected under normal temperatures. I’d say charging time is a bit longer than expected. It takes slightly more than 3 hours to charge the fish finder to 100% battery. If you’re going away on weekend fishing trips you will need to purchase a USB external battery to have it charged at all times.

Strengths
  • Wide 90-degree scanning beam
  • Triggers an audible alarm whenever fish are detected
  • Measures temperature in Celsius and Fahrenheit degrees
Weaknesses
  • Not made for ice fishing
Check Customer Reviews

13. Lowrance Hook-3X Sonar Fishfinder

Lowrance Hook-3X, best budget fish finderThis is another highly recommended best fish finder with a budget-friendly price tag. It features a 3-inch, LED-backlight screen with 320x 240 pixel resolution and sonar operation that gives up to 60 degrees of conical coverage.

It is easy to operate with its Advanced Signal Processing (ASP). This practically eliminates the need to manually change settings in order to view the bottom detail more clearly. There are dedicated quick keys that users can turn to if they want to focus on the strategic fishing areas.

The power button also acts as a backlight control, so users will be able to change the screen lighting depending on ambient conditions. We also love its Fish ID that shows fish icons instead of the usual fish arches. There are also track and alarm options in this unit.

However, many users say that this Lowrance fish finder will struggle in showing bottom structure, depth, and water temperature when the boat moves at a pace faster than 5 miles per hour. There are also reviewers who doubt whether this fish finder is water proof.

Strengths
  • It is easy to use
  • It is affordable
  • It’s easy to mount/install
Weaknesses
  • It struggles to show bottom details when the boat starts moving fast
  • It isn’t waterproof
Check Customer Reviews

14. Raymarine Dragonfly Sonar GPS Fishfinder

Raymarine Dragonfly Fishfinder, Sonar GPS Fishfinder This is the latest offering from Raymarine and expectedly, it has all the advanced technologies you would want from a fish finder. Yet it is still competitively priced which makes a lot of anglers very intrigued with this unit. One of its key functions is CHIRP sonar.

With this feature, there are more signals emitted into the water leading to better images seen on the Dragonfly Pro’s screen. In short, you will see images that are clear and very distinguishable. The DownVision technology meanwhile, works at depths of up to 160 feet. We also like that it has WiFi and a mobile app that lets you control the unit.

This means you and your buddy won’t have to jockey to get the best view of the screen. Simply connect to the mobile app, and you can see whatever your buddy is seeing on the Dragonfly Pro’s screen. Speaking of screens, the Dragonfly 5 offers a 5-inch display with a 640 x 480 pixel resolution.

Strengths
  • Wi-Fi capable
  • Bright screen
  • Very easy to use
Weaknesses
  • No cover
Check Customer Reviews

15. Raymarine Dragonfly-4 Pro Fishfinder

Raymarine Dragonfly-4 Pro, Best Fish FinderThe Raymarine Dragonfly 4 Pro is loaded with features you would think that it is a high-end product. But isn’t it nice when you see its price tag well within your budget? This is a waterproof unit that’s very easy to use. It has a 4.3 inch LCD screen with a decent 480 x 272 resolution.

Images appear in bright colors and sharp contrasts thanks to its built in optical bonding. We also like that the images are viewable at different angles. With that screen size, the 4Pro can show single or split screen illustrations. You don’t need to worry, though, as the unit shows easy to read large numerals.

And yes, this is a fog-resistant device that you can bring for any fishing expedition. This unit is also Wi-Fi capable so I can connect to a smartphone or tablet. This is a great feature as they can use the mobile app of Dragonfly in rewinding or capturing still images. Others, though, are disappointed that the unit takes a lot of time when starting up.

Strengths
  • Portable
  • Wi-Fi capable
  • With a mobile app
Weaknesses
  • It is slow to start up
Check Customer Reviews

How Fish Finders Work – Step by Step Guide

Fish finders can seem like alien technology to those who have never used one before. With this in mind, it is important that any serious fisherman understands how they function. After all, you will not want to invest in an expensive piece of technology like how fish finders Work without understanding the benefits it will unlock for you.

how fish finders work, how do fish finders work
Thankfully, we have put together this list to benefit our readers. By going over each important aspect of the fish finder, we have described how fish finders work to help you fish more effectively. After you’ve read this article, you will be itching to get your hands on a high-quality fish finder model.

1 The Interface

Before you get started learning how the various programs, features, and pieces of your fish finder work, you need to familiarize yourself with its interface. By doing this, it will be easier to understand what you’re looking at as we discuss the next few steps of learning how fish finders Work.

The manual that comes with your model is extremely useful for learning to understand what you’re looking at on the display interface of your fish finder. Having your manual handy is also highly recommended for the rest of the steps on this list.

2 Fish ID Settings

Most fish finders show basic fish shapes when you first start them up. These shapes are representative of where the fish are predicted to be located. While this feature is useful for beginner users, you eventually want to change the settings to replace them with various arch shape representations. This will give you a better idea of the trajectory of the fish being picked up, allowing you to more effectively reel it in.

3 Auto Depth Features

The auto depth tool on a fish finder determines where the bottom of the body of water you are on is. However, their accuracy depends on a wide variety of factors. Similar to the fish ID setting, you will want to adjust this feature once you’ve become familiarized with it. Eventually, you will be setting the upper and lower limits of the auto depth aspect yourself, allowing the fish finder to read your environment more accurately.

4 Depth Cursors

Once your fish finder has located fish, you can use the depth cursor to help it more accurately read the location of the fish. Fish finders use the position of the depth cursor to focus their readings more intensely in that area. You simply need to place the cursor on the arches representing the fish your finder is picking up, and the accuracy of your readings will increase.

5 Zoom Features

Before getting into mounts and programming unique controls, you need to understand how one last feature of a fish finder works: the zoom. Your fish finder can zoom into areas of its readings, giving you a better understanding of what it is picking up. Once you know the area you want to focus your angling efforts into, you should use the zoom feature to get a more precise reading. By doing this, you will allow the fish finder to adjusts the way it is reading an area to benefit that particular region.

6 Programmable Controls

Once you’ve learned the basics of the systems that make a fish finder work, you can start adjusting settings to your individual needs. Additionally, you can program the controls on many fish finder models. This allows you to quickly go into preset modes you’ve created to help you simplify the setup process. If you fish certain areas constantly, you will simply need to press a button, and you will be ready to start reeling in tons of impressive fish.

7 Mounts

After you understand how a fish finder works, its time to install in on your watercraft. Depending on the type of craft you’re using, you will need a certain kind of mount. There are several kinds of mount types, but generally speaking, you will be investing in one of the following:

  • Manual Mount
  • Hull Mount
  • Trolling Motor Mount
  • Transom Mount
  • Portable Mount

Each one of these mounts benefits different types of watercraft. For example, a portable mount is ideal for those who either use several different craft or who use smaller, more intense craft like kayaks when fishing.

Transom mounts, on the other hand, are meant to be used with larger, more professional fishing boats and setups. Knowing which mount to invest in will not only save you money, but it will ensure you use your fish finder properly after learning its features, and figuring out how it works.

Things to Consider When You Look for the Best Fish Finder

A fish finder is a device that uses sonar to display underwater objects, like the bottom, logs, rocks, and fish. A fish finder keeps you from fishing in areas where there are no fish. You can maneuver your boat or kayak into position directly above the fish.

This technology greatly increases your chances of catching a fish, because you can see them. But how do you decide which fish finder to buy? There are many factors to consider when picking out which one is best for you.

Price

First, you need to decide how much money you are willing to spend. There are fish finders on the market from $80 to $2000. Deciding on your fish finder budget will quickly eliminate the ones out of your price range.

Portable or Fixed

Next, you should decide whether the unit you need will be a portable one or a fixed one. Portable fish finders usually run off of batteries inside of them. They are usually small enough to fit in your pocket. They are ideal for use on kayaks, can be moved from boat to boat, or can also be used to fish off of a dock.

Fixed units are usually wired up to 12-volt power. They usually attach to a permanently mounted bracket on your kayak or boat. The unit is typically removable from preventing theft. The performance of portable vs. fixed units is very comparable.

Display

There are three factors to consider when deciding what type of display you want on your fish finder. They are color, size, and pixels. Do you want a black & white or a color display? Users report that color displays are much easier to see in overcast or low-light conditions. Units with black & white displays are usually more affordable. The size of the screen is the next decision.

Just like your phone, notepad, or computer, larger displays are much easier to see and use. However, as the size of the screen increases so does the price. Pixel numbers are similar to your TV set. There are cheaper units with low pixel counts and expensive ones with HD screens. Deciding what color, size and pixel count you want help to narrow down your decision further.

Transducer

The transducer is the eyes for any fish finder sonar system. The transducer shoots out a beam of sound waves at a particular angle from 9-degrees to be 60-degrees. Fewer degrees perform well at deeper depths while wider beam angles allow you to see more in shallow water. Consider what conditions you fish most often.

A good all-around transducer angle is 20-degrees. Some more expensive fishfinders use multiple transducers to allow you to see down, and also to the sides of your boat. Most people are very happy with a single (down) transducer system. Decide what your needs are and match them to your price range. Learn more about transducers here.

GPS

Many manufacturers make units that are both a fish finder and a GPS unit. Of course, these dual-function units cost more money. Keep in mind where you fish most often. GPS capable units allow you to plot points so you can remember hot spots where you have had success in the past.

They can also help with navigation. If you fish most often in ponds, lakes, or rivers, GPS may not be necessary. If you fish in the ocean a good deal, GPS is a valuable safety tool to have on your boat. A combination fish finder/GPS helps to eliminate the need for two separate units and can save space in your boat.

Manufacturer

When choosing your best fish finder for the money, keep in mind that not all manufacturers are the same. I suggest that you focus your search on established brands. Lowrance, Humminbird, Garmin, and Raymarine have been producing marine electronics for a long time. These companies will stand behind their products if you have any problems. In the portable market, many people are happy with Fish Hunter and Deeper Smart brands as well.

Comfort and Convenience

Buying the best fish finder for the money can be a complicated decision. However, if you follow this step-by-step decision guide, you can quickly focus on the units that are best for your individual needs. As with any other product, the more you spend, the more you get.

Scanning

There are two ways for fish finders to scan fishes and structures below your boat—side scan and down scan. Down scan imaging is powerful and focused but it can make you miss targets that are not passing directly underneath. On the other hand, side scan fish would enable you to scan lots of water but isn’t as effective as down scan imaging for deep waters. You’d want to get a fish finder with both side and down scan imaging. It’s like getting the best of both worlds.

Design and Durability

The design of the shape can affect where and how the device will be mounted on your watercraft. You should also get a fish finder that is waterproof and weather resistant. If you’re looking to fish in saltwater, then buy a fish finder that is designed to resist corrosion.

Wi-Fi

This is a function that is particularly useful if you swim with a buddy. With a Wi-Fi capable fish finder, you can connect to a phone or tablet and still see the images shown on the fish finder. So in effect, you get to have an extra screen aside from the fish finder. This means you don’t have to jockey for position with your buddy in seeing the images flashed on the fish finder.

How to Use Fish Finder – Beginner to Advance Guide

If you’re looking up this Section, you may know the basics of fish finders already, but this information will take you to the next level. By fine-tuning both your fish-finding abilities and your ability to use a fish finder, your fishing game will increase drastically.

Zoom Features

After you learn to properly utilize the zoom feature of your fish finder, you can get a better understanding of the areas you are fishing in. You need to understand that the way lines pop up on the screen can be counter-intuitive. For example, a hard bottom will show up as a thin bottom line, while soft bottoms present a thick bottom line.

This happens because sonar waves penetrate soft bottoms to some degree before bouncing back and giving information to the fish finder. Ultimately, to understand whether the bottom of the area you are fishing over is hard or soft, you need to zoom in far enough to see the last five or ten feet of water being picked up by your fish finder.

Transom-Mount Transducer

Most fish finders come with a transom-mount transducer. This useful feature can get you better results, but only if you know how to calibrate it properly. To get good feedback, try adjusting the settings, or changing your location entirely. For the fine mount, you must be need to know How To Use Fish Finder

When you are receiving poor details and info from your fish finder, these settings are often why. By adjusting them, you unlock a much better ability to use your location features. Turbulence can also interfere with the readings you’re getting from the fish finder. When you are having interference from turbulence, changing settings in the transom-mount reducer is a perfect solution.

Also Read: Best Fish Finder Under $500 – 2020 Reviews & Top Buying Guide

Tuning Features

Any quality fish finder on the market today has highly sensitive tuning capabilities. While this will benefit you greatly in still waters, you might find that it seems like a detriment in rougher areas. If you don’t know how to adjust your settings to do well in rougher water’s, or those with thick plank-tonic or algae growth, you will be lost at sea. When you find yourself in this situation, simply peak the transducer slowly work your way down from the maximum setting.

Eventually, you will get to a perfect area of sensitivity. Another important tip for tuning is that it’s always ill-advised to boost filters when trying to reduce surface clutter. All this will do is decrease the amount of sensitivity your tuner is experiencing. Filters may give you a better view of surface features, but it will do little to give you a clear view of the area below the surface that really matters.

Understanding the Interface

Fish finders should always be used in conjunction with your chart-plotter. This will help you understand the various visual signifies that show up on your fish finder. If you have a combo unit, using the split-screen feature so you can see both the fish finding and chart-plotter data is highly recommended. Those who failed to invest in a combo system, should try to invest in one if at all possible.

You will be able to easily scroll between important information, and you can easily reroute to any area that promises a better chance of catching big amounts of fish. With these amazing tips, you will get a lot more use out of your fish finder. Once you begin having a more finessed approach to your fishing excursions, you will never go back to fishing blind again.

Conclusion

Now that we have listed the best fish finders in the market today, there’s just one question that needs to be answered—what is the best model in this list? While there are lots of top rated fish finders in this list, we have to go with the Garmin Striker 4 Fish Finder.

It has the advanced functions you would want from a top rated mode – CHIRP sonar, DownVision technology, Wi-Fi compatibility and a large, 5.5 inch screen. It’s very easy to install and operate. And the price is a steal for all its good qualities. It is hard to argue that the Garmin Striker 4 Fish Finder is the king of fish finders today.

Relevant Resources

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Filed Under: Fish Finder, Fishing

About Mark

I am Mark, A fishing enthusiast. I have created this blog in order to share my research and experience with those who love fishing.

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Table of Contents
  • Comparisons of 15 Best Fish Finders in 2020
  • Top 15 Best Fish Finder Reviews in 2020
    • 1. Garmin Striker 5cv GPS Fishfinder
    • 2. Humminbird Helix 7 Chirp DI GPS G2 Fish Finder
    • 3. Garmin Striker 7SV Fish Finder
    • 4. Humminbird Helix 5 Fish Finder
    • 5. Garmin Striker 4 GPS Fish Finder
    • 6. ReelSonar Wireless Smart Fish Finder
    • 7. Venterior Portable Handheld Fish Finder
    • 8. Garmin Striker 4cv Fish Finder
    • 9. RICANK Portable Fish Finder
    • 10. Deeper Start Smart Fish Finder
    • 11. JOYLOG Smart Sonar Fish Finder
    • 12. Lucky Smart Fish Finder
    • 13. Lowrance Hook-3X Sonar Fishfinder
    • 14. Raymarine Dragonfly Sonar GPS Fishfinder
    • 15. Raymarine Dragonfly-4 Pro Fishfinder
  • How Fish Finders Work – Step by Step Guide
    • 1 The Interface
    • 2 Fish ID Settings
    • 3 Auto Depth Features
    • 4 Depth Cursors
    • 5 Zoom Features
    • 6 Programmable Controls
    • 7 Mounts
  • Things to Consider When You Look for the Best Fish Finder
    • Price
    • Portable or Fixed
    • Display
    • Transducer
    • GPS
    • Manufacturer
    • Comfort and Convenience
    • Scanning
    • Design and Durability
    • Wi-Fi
  • How to Use Fish Finder – Beginner to Advance Guide
    • Zoom Features
    • Transom-Mount Transducer
    • Tuning Features
    • Understanding the Interface
  • Conclusion

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