How To Mount a Fishfinder 101: In-Depth Guide and FAQs 2023

A. A description of a fishfinder

Sonar technology is used by a fishfinder to find fish and other underwater objects. It functions by projecting sound waves from a transducer fixed on the bottom of a boat or kayak, which then reflect back and are decoded by the apparatus to provide an image of the underwater topography. Fishfinders are becoming a necessary piece of equipment for fishermen of all levels because they may help with fish location and provide information about the depth and structure of the water.

A. The significance of mounting a fishfinder

A fishfinder needs to be mounted properly for a number of reasons. In the first place, it makes sure the apparatus is firmly fastened to the boat or kayak, preventing it from falling into the water or moving while in use. Also, by giving a clear view of the underwater environment, putting the fishfinder in the ideal spot can boost its accuracy and efficacy. Finally, by minimising damage from loose wires or unstable equipment, a properly installed fishfinder can also assist maintain the boat or kayak’s general appearance and usefulness.

Tools Need

A list of the required tools





mounting strut

installing a transducer kit

electronic tape

connections for wires


A. A description of every tool


Drilling is done to make holes in the kayak or boat for installing bolts or screws.

Screws are required to secure the mounting bracket to the kayak or boat.

Use a screwdriver to tighten nuts or screws.

To tighten nuts or bolts, use a wrench.

With a mounting bracket, the fishfinder display unit is fastened to the kayak or boat.

Hardware and instructions are included in the transducer mounting kit for mounting the transducer to the kayak or boat’s bottom.

Electrical connections are wrapped and secured with electrical tape.

Fishfinder wiring is connected to the boat or kayak’s electrical system using wire connectors.

Fuse: Used to prevent overloads and short circuits in the electrical system of the kayak, boat, and fishfinder.

III. Choose the Proper Place

A. The significance of location

How To Mount a Fishfinder 101

In order to get the best performance out of your fishfinder, placement is essential. The precision and quality of the images seen on the device can be significantly impacted by the transducer’s placement, in particular. It can be more challenging to find fish at a bad site due to erroneous readings, low visibility, and diminished sensitivity.

B. Things to take into account when selecting a place

There are a number of things to take into account when deciding where to place your fishfinder. They consist of:

Water depth: The type of transducer and mounting position that best meets your demands will depend on the depth of the water.

Design of your boat or kayak: The size and shape of your boat or kayak will also affect where the fishfinder should be placed.

Fishing technique: Where you put the fishfinder depends on the type of fishing you’ll be performing (trolling, jigging, etc.).

D. Location testing techniques


It’s crucial to test the position before mounting the fishfinder to verify that it will function at its best. The transducer can be lowered into the water at various points around the boat or kayak by being fastened to a pole or board. Keep an eye on the fishfinder’s images and note any interference or erroneous readings. You can use this to choose the ideal spot to mount the transducer.

Installing the Transducer, Part IV

A. A definition of a transducer

A fishfinder’s transducer is the component that sends out sound waves and listens for echoes returning from submerged objects. A wiring harness connects it to the display unit, and it is typically located on the bottom of the boat or kayak.

B. Transducer types

Transducers come in a variety of varieties, each created for particular boat and fishing setups. They consist of:

Transom mount: For small to medium-sized boats, this mount is attached to the transom.

Thru-hull mount: Suitable for larger boats or boats with high speed capabilities, this mount is installed through the hull of the boat or kayak.

Portable mount: A small, transportable choice that is simple to move between kayaks or boats.

D. Transducer mounting techniques

The method of attachment will change depending on the transducer type and kayak or boat shape. Yet these are the fundamental actions:

Based on the outcomes of your testing, decide where the transducer should be placed.

In accordance with the manufacturer’s instructions, install the transducer on the mounting bracket.

Mark the holes for the mounting screws after positioning the bracket and transducer in the desired location.

Drill the holes, then use screws and a screwdriver to fasten the bracket to the kayak or boat.

As directed by the manufacturer, attach the transducer to the wiring harness.

C. Recommendations for installing a transducer.

How To Mount a Fishfinder

It’s critical to follow these best practises to ensure peak performance and avoid harm to the transducer or boat:

Any openings or spaces surrounding the transducer and bracket should be filled with marine-grade silicone sealant.

Mount the transducer far from anything that might interfere, such as electronic equipment, bilge pumps, or propellers.

To make sure that the transducer mounting is still firmly in place and hasn’t moved while being used, check it frequently.

To protect the transducer from debris or impact damage when not in use, wrap it in a cover.

Installing the Display Unit, Section V

A. Display unit types

There are various display unit kinds, each with a unique set of features and abilities. They consist of:

Fixed mount: A permanent fixture fastened to the console or dashboard of a boat or kayak.

A portable mounting solution that is simple to transport between kayaks or boats.

Systems that are networked together, such as GPS, radar, and sonar systems, are display units that are a component of a wider network of electronic equipment.

A. Display unit mounting techniques

 How To Mount a Fishfinder

Depending on the type of display unit and kayak or boat design, there are many installation techniques. Yet these are the fundamental actions:

The display unit should be placed so that it is both accessible and visible from the driver’s seat.

Identify the hardware or mounting bracket the unit needs.

Mark the holes for the mounting screws after positioning the bracket or other hardware in the desired location.

Drill the holes, then use screws and a screwdriver to fasten the bracket or hardware to the kayak or boat.

Using the hardware or bracket, attach the display unit in accordance with the manufacturer’s instructions.

D. Recommendations for properly attaching a display unit

It’s crucial to adhere to these basic practises to guarantee peak performance and avoid harm to the display unit or boat:

To fill in any holes or gaps around the mounting bracket or hardware, use a marine-grade silicone sealant.

Make sure the display unit is firmly fastened to the mount or other hardware so that it won’t move while in use.

Avoid putting the display unit next to any radios or other electronic devices that could interfere with it.

Protect the display unit with a cover while not in use to shield it from debris and impacts.

You can make sure that your display unit is placed securely and will deliver dependable performance for years to come by adhering to these best practises.

Electrical Connections, Section VI

A. The value of using the right electrical connections

For your fishfinder to function reliably, proper electrical connections are necessary. The fishfinder could malfunction or possibly damage your boat or kayak if the connections are not completed properly.

Wiring the fishfinder, step B

How To Mount a Fishfinder

The process of wiring a fishfinder might be complicated, therefore it’s crucial to carefully follow the manufacturer’s instructions. Basic procedures for wiring a fishfinder are as follows:

Your boat or kayak’s battery or electrical system should be connected to the power cord.

Fishfinder and transducer cable connected.

Comply with the manufacturer’s directions before connecting any additional connections or accessories.

To prevent wires and cables from separating while being used, secure them all.

C. Checking electrical connections

It’s crucial to examine the electrical connections on your fishfinder before putting it on the lake to make sure everything is functioning properly. Follow these steps to accomplish this:

Check that all displays and indicators are working properly by turning on the fishfinder.

Verify that the fishfinder is receiving power from the transducer and receiving indications from it.

Verify that the fishfinder is accurately showing depth, fish, and other information by moving the boat or kayak about.

Test the fishfinder, part seven

How to test a fishfinder, part A

To make sure your fishfinder is operating properly and provides accurate information, testing it is a crucial step. To test your fishfinder, take the following actions:

Check that all displays and indicators are working properly by turning on the fishfinder.

Make sure the transducer is positioned and aligned correctly before lowering it into the water.

To check if the fishfinder accurately displays depth, fish, and other information, move the boat or kayak while keeping an eye on it.

Any problems or differences should be noted and addressed as needed.

A. Solving typical problems

When testing your fishfinder, you can run across problems like erroneous depth readings, interference from other electronic devices, and trouble finding fish. Use the following solutions to troubleshoot these problems:

Verify the alignment and position of the transducer.

Verify the security and functionality of the electrical connections.

With the fishfinder, change the sensitivity and other parameters.

Check a different place before moving the kayak or boat to check whether the problem still exists.

By paying attention to these pointers, you can make sure that your fishfinder is giving you correct information and making it simple for you to discover fish.

8. Concluding

A recap of why attaching a fishfinder is important

Installing a fishfinder is a crucial step that can significantly improve your fishing experience. You can make sure that your fishfinder is delivering accurate information and assisting you in easily locating fish by picking the appropriate position, correctly attaching the transducer and display unit, and ensuring good electrical connections.

B. Concluding remarks and advice for installing a fishfinder successfully

There are a number of crucial elements to think about while mounting a fishfinder. Final recommendations for effective installation include:

Take your time and pay close attention to the manufacturer’s directions.

Choose a spot that is convenient to get to and visible from the driver’s seat.

To avoid leaks and damage, use marine-grade silicone sealant and high-quality mounting hardware.

Before utilising the fishfinder on the water, give it a complete test.

You can have a more successful and pleasurable fishing experience by paying attention to these suggestions and spending the time to install your fishfinder correctly.