Castable fish finders are even smaller than the portable fish finder – for very good reasons. Instead of it being contained in a single unit, this fish finder uses a floating transducer and a smartphone app to track fish. Most people who use this option fish on the bank, but it can be used for those on boats.
Mountable fish finders are fish finders that can be temporarily mounted on boats – either on the side or the transform of the boat. It also has the added bonus of being able to be used with an inner tube floatie.
Top 10 Best Selling Portable Fish Finders in September 2022
Last update on 2022-09-25 / Affiliate links / Images from Amazon Product Advertising API
Fish Finder Reviews
1. Garmin Striker 4 with Transducer GPS Fish Finder
This device uses a waypoint map to locate and mark out areas in water that contain stumps, docks, and brush piles. Also uses CHIRP Sonar to create better and crisper fish arches for target separation.
As a bonus, this device is relatively simple to use. The IPX rating is 7. Also contains a built-in flasher – which makes it easier for you to view your sonar data.
If you want to use it for kayak, canoe or ice fishing you’ll need a portable kit. It is sold separately and includes a sealed, rechargeable battery with charger, built-in transducer cable management and storage and suction cup transducer mount and float.
This device can be fully submerged in water
Built-in flasher to view sonar data easily
Waypoint map and sonar technology helps you avoid dead areas quickly and find fish
Convenient keypad operation
Includes CHIRP (77/200 kHz) sonar transducer; transmit power (200 W RMS)/(1,600 W peak-to-peak)
Upgrade to high performance CHIRP with a GT8 or GT15 transducer (each sold separately)
Not easy to use for first-timers
What’s in the box?
In the box you’ll find: Garmin STRIKER 4 Unit, dual-beam transducer, transom and trolling motor mounts, tilt/swivel mount, power cable and documentation.
2. LUCKY Handheld Fish Finder with Sonar Transducer and LCD Display
Its portable detection cone range is less than 45 degrees underwater, and its sonar detection technology can be used to penetrate the water from 3 feet (1 meter) to 328 feet (100 meters). The sonar transducer has the option of using a floatie.
Can be used in almost any scenario
Several sensitivity modes that you can adjust to your specifications
3. Venterior VT-FF001 Portable Fish Finder with Sonar Sensor Transducer and LCD
It is also a very versatile device, as it can be used to fish in any situation e.g. lake fishing, boat fishing, shore fishing, and ice fishing. It comes with a round transducer (with a 25-foot cable) and a removable transducer float.
The detection range of 3 feet (1 meter) to 23 feet (100 meters) underwater
Comes with a transducer float that is removable
A versatile device that can be used under virtually any circumstance, no matter where you want to fish
4. Garmin Striker 4cv GPS Fishfinder with CHIRP Traditional and ClearVu Scanning Sonar Transducer
The Garmin Quickdraw Contours is a mapping software that is also built into the device and allows you to create and save maps with 1’ contours, up to 1 million acres of material. The built-in GPS system also allows you to mark where there are waypoints, continually evaluate your current speed, and create customized routes.
The display is 4.3” and can be used in any fishing environment you find yourself in e.g. shore fishing, ice fishing, lake fishing, and kayak fishing.
Designed to be used in harsh environments, like ice fishing, and can be submerged underwater
Mapping software and the GPS allow you to create your own maps and routes and mark out dead areas
What’s in the box?
In the box you’ll find: Garmin STRIKER 4cv Unit, transducer, transom and trolling motor mounts, tilt/swivel mount, power cable and documentation.
5. Deeper Smart Sonar PRO+ GPS Portable Fish Finder for Shore and Ice Fishing
The Deeper PRO+ uses a built-in GPS system to help the fisherman create bathymetric maps on the shoreline. Users who buy this product also have free access to a book (Lake book) platform on bathymetric map management.
Using this feature, you can review, save, and analyze any data you collect while in the comfort of your own home.
Uses wireless technology to find fish and inform you of their surroundings quickly
Use the Lake book feature to review and analyze maps for the next time you fish
GPS system allows you to create personalized maps a routes
Can only be used by shore fishermen
What’s in the box?
In the box you’ll find: Deeper Smart Sonar PRO+, attachment bolts, USB wire and neoprene pouch.
6. ReelSonar iBobber Wireless Bluetooth Portable Fish Finder
The GPS spot tagging app allows you to make maps, while the Trip Log app allows you to mark what happened on your trip e.g. the location where you found the fish, the conditions (water depth, structure, etc), the species and how many fish you caught on that particular fish. It also contains apps for the weather and the lunar calendar. Fishermen can use the fish and strike alarms and can choose between using fish tagging and raw sonar.
The sonar technology guarantees that you will get a structure and contour map of the area you are fishing in.
Great battery life
Uses Bluetooth technology to pair several apps; can be used by Google and Android users
What’s in the box?
In the box you’ll find: Realsonar iBobber, USB wire.
7. Lowrance HOOK2 5 Fish Finder with TripleShot Transducer
This device uses a TripleShot transducer, which enables DownScan sonar (straight down), SideScan sonar (300’ on each side), and CHIRP sonar (fish arch) views. Its use of the CHIRP sonar cone ensures that this device offers you a wider sonar cone degree of distance, around twice the net of the traditional fish finders.
This fish finder is very easy to set up, all you have to do is mount the single transducer on either the inside of the hull, the scupper hole, or the trolling motor.
Allows multiple views and information gathering, using sonar technology
Easy to use, no customization needed
Limited to usage on kayaks or small boats
What’s in the box?
In the box you’ll find: Lowrance HOOK² 5 Unit, 1 Set of 3 x 3-amp Fuses, TripleShot Skimmer Transducer, Cruise 5 Bracket, Cruise Power Cable, TripleShot Transom Bracket.
8. Humminbird HELIX 5 Portable Fish Finder
This device also contains a Precision Internal GPS Chart, with Anima cartography that has been built into the system. This gives you information about the body of water’s contours, depth, and marks various hazards. It also uses imaging and side imaging to produce this information.
There is also a Micro SD card slot for any upgrades the device might need, for use of saving maps or waypoints.
Can be upgraded whenever technology improves, thus improving the lifetime usage of the product
9. Deeper Start Smart Castable Fish Finder
This device uses Smart technology with WiFi, meaning you do not need mobile data or the internet to use this product. This device casts down to 165 feet and casts out to 165 feet with a 40-degree sonar beam.
It contains an app called Deeper, which displays vegetation, water contour, depth and size, and the location of fish. This app can be downloaded for free and is updated on a monthly basis.
Every time this device scans the water, the location and findings are saved into its system for deeper analysis. This device features a lightweight, sleek design that makes it easier to cast and easy to reel in. It has a 6-hour battery life but needs 2.5 hours to recharge.
Has its own hotspot and collects your data instantly through the Deeper App
Lightweight, sleek design for easy use
10. Humminbird Helix 7 Fishfinder
It also comes with a Navionics+ SD card, which offers an unprecedented amount of information on over 21,000 lakes and water bodies in the United States and Canada.
Utilizes both Mega Side Imaging (can view within 125 feet on either side of the boat) and Mega Down Imaging (can view 125 feet below the boat) with crystal clear picture and images. Comes with a transducer, power cable, and mounting bracket. The GPS Speed app and an LED backlight finish off this Bluetooth enabled fish finding device.
Contains crystal clear imaging on either side and below the boat
The software can be upgraded due to the SD card
Can only be used in Canada or the United States specifically because of the Navionics+ SD card
Portable Fish Finder Buying Guide
There are so many different types of transducers, echoes, flashes, sonars, that it can be hard to keep track of what’s important and what isn’t. To help you, here is a buying guide to help you decide which aspects of the portable fish finder that you want to use are essential to your needs while fishing.
The transom mount is the easiest to install; the thru-hull mount is for larger boats and is the most difficult to install.
The type of material used in the transducer you buy will depend on the type of boat you use. If you are a casual, yet eager fisherman, then using a plastic transom mount is fine. You can use these on almost any type of boat. Most recreational fishermen use this type of mount.
You can also use a thru-hull or in-hull mount, which comes with fiberglass or metal hulls that require plastic housings. Steel or aluminum hulls will need stainless steel housings. Fiberglass wood hulls need bronze housings.
Beams and Cone Angles
Transducers can also emit more than one cone. So while many portable fish finders only have the technology to include one cone angle, it might be worth it for you to find a device that has several e.g. dual beam, triple beam, side beam, etc. This is great if you are in a larger body of water e.g. a lake or the ocean.
Dual, Single, and Multiple Frequencies
For deeper waters, most use 50 kHz.
For shallower and slower readings, related to the depth of the water, you will want a lower wattage unit.
Always check the JIS or IPX ratings to determine the level of water resistance the portable fish finder holds.
A five or six rating means that your device can withstand getting wet with low-pressure water. However, a rating of seven means that you can immerse it in 10 feet of water for half an hour.
Portable Fish Finder Q&A
What is the best fish finder for your money?
What is the best Bluetooth fish finder?
What is the best fish finder for kayak fishing?
What is the best portable fish finder for shore fishing?
It can also help you analyze your surroundings (water depth, temperature, vegetation, hardness, etc) and figure out what you are dealing with – potentially helping you choose different spots on the shore because of the information you get from this device.
What is the best fish finder for a float tube?
What is the best fish finder for ice fishing?
Its design also makes it great for extreme weather, which is a factor in ice fishing especially.
Do you want to fish in a shallow lake or a large, deep ocean? Do you enjoy fishing from the shore or off of a kayak or boat? Do you find ice fishing thrilling, yet want to make sure you catch fish this year? All of these questions are important and can be answered with a little research.
There are so many different types of portable fish finders that you can buy e.g. Portable Units, Castable, and Mountable. Each serves their own purpose to you and are made equally important. Yet the best fish finder is particularly the portable fish finder, or the castable fish finder, or even the mountable fish finder – it’s all about what suits the situation you will find yourself in, as you are fishing.