Best Transducer Mounting Spots For Aluminum Bass Boats

Mounting a transducer on an aluminium boat is a crucial step in ensuring accurate and reliable sonar readings. Transducers are the key component of fish finders and depth sounders, and they work by emitting sonar waves that bounce off underwater objects and return to the device, providing valuable information about the water depth and presence of fish.

There are several options for mounting a transducer on an aluminium boat. One common method is to use a transom mount, which involves attaching the transducer to the back of the boat's hull above the waterline. It's important to ensure that there is no interference from strakes or other protrusions that could disrupt water flow and affect sonar readings. Another option is to drill holes and mount the transducer directly on the transom, using silicone or other sealing products to prevent leakage. Some people also use a transducer mounting plate or a piece of nylon or PVC board to attach the transducer without drilling holes in the hull.

Transom Mounts: A popular option for aluminium boats, they attach to the back of the hull above the waterline

Transom mounts are a popular option for aluminium boats as they are easy to install and remove. They are also a more affordable option compared to bow mount engines. Transom mounts are usually attached to the back of the boat's transom using a bracket and screws.

When mounting a transducer on an aluminium boat, it is important to consider the hull design. Aluminium boats typically require a different approach due to their hull construction. It is crucial to choose a location that ensures a clear and undisturbed flow of water. The transducer should be mounted above the waterline, and it is important to ensure there is no interference from strakes or other protrusions that could disrupt water flow and affect sonar readings.

• Central Location: Aim to install the transducer as close to the centre line of the boat as possible, typically on the starboard (right) side due to the downward swing of the propeller.
• Distance from Propeller: Ensure the transducer is at least 15 inches (38 cm) away from the propeller to avoid interference and potential damage.
• Avoiding Propeller Path: Do not place the transducer in the path of the propeller, as this can cause cavitation and degrade boat performance, potentially damaging the propeller.
• Steer Clear of Turbulence: Avoid mounting in areas downstream of strakes, struts, fittings, water intake or discharge ports, or anything else that creates air bubbles or turbulent water, as this can lead to inaccurate readings.
• Orientation: Ensure the transducer is parallel to the waterline when the boat is in the water for consistent contact with the water and more accurate readings.
• Avoiding Excessive Depth: Mounting the transducer too low increases drag, exposes it to debris, and can create turbulence that hinders performance.

To install a transom-mounted transducer, follow these steps:

• Gather tools and materials: transducer, mounting hardware, drill, bits, marine sealant, screwdriver, wrench, tape, level, and marker.
• Confirm the location: Recheck the transducer's position, ensuring it is away from any obstructions and in an area with minimal turbulence.
• Mock setup: Temporarily place the transducer and bracket, marking the screw positions to ensure level alignment.
• Drilling: Drill holes at the marked spots, using a drill bit slightly smaller than the mounting screws for a tight fit.
• Apply sealant: Apply marine sealant to the holes to prevent water seepage into the transom.
• Attach bracket: Align and screw in the bracket, keeping it loose for adjustments.
• Adjust transducer: Slide in the transducer and align it parallel to the hull, ensuring it is submerged when the boat is at rest.
• Tighten everything: Once everything is aligned, tighten the screws on the bracket and transducer.
• Route cable: Route the transducer cable to the fishfinder display inside the boat, avoiding pinch points, and secure with clamps or ties.
• Connect display: Attach the transducer to the display unit, ensuring a tight connection.
• Test the setup: Test the transducer in shallow water before going deeper to ensure it is functioning correctly.
• Final checks: Check that screws are tight, sealant is dry, and cables are secure.

By following these steps and considerations, you can ensure optimal performance and accurate readings from your transducer mounted on an aluminium boat using a transom mount.

Thru-Hull Transducers: These can be used on aluminium boats but require careful positioning to avoid interference

When it comes to mounting a transducer on an aluminium boat, it is important to consider the best location for optimal performance. The transducer is a critical component of your fish finder or depth sounder, sending and receiving signals to detect underwater objects and the depth of the water. Mounting it correctly can make a significant difference in the accuracy and clarity of the readings.

Thru-hull transducers can be used on aluminium boats, but careful positioning is required to avoid interference. Unlike fibreglass boats, where you can typically mount through-hull or shoot-through-the-hull transducers, aluminium boats usually require a different approach due to their hull construction.

A true thru-hull transducer is one that you drill a hole for and mount through the hull. These work fine on aluminium boats. However, it is important to note that the installation process for thru-hull transducers can be more complex and time-consuming. It involves drilling a hole in the hull and ensuring proper sealing to prevent leaks.

When installing a thru-hull transducer on an aluminium boat, it is recommended to use a plastic transducer mount to avoid potential electrolysis problems. Mounting the transducer between two ribs of the boat usually works best. It is also important to ensure that the chosen location doesn't interfere with the boat's trailer and is at least one foot away from the engine's lower unit.

Another factor to consider is propeller wash and water turbulence caused by your outboard motor. Ideally, you should mount the transducer in a location that offers a clear and undisturbed flow of water.

Additionally, when mounting a thru-hull transducer, it is crucial to use the proper adhesive or sealant. Marine-grade adhesive or silicone sealant can be used to secure the transducer to the hull. It is also important to ensure that any cables or wiring associated with the transducer are securely fastened to prevent them from snagging or getting damaged.

By carefully positioning and installing your thru-hull transducer, you can achieve optimal performance and accuracy from your fish finder or depth sounder on your aluminium boat.

Shoot-Through-The-Hull Transducers: Unlike thru-hull, these are suitable for fibreglass boats

When it comes to mounting a transducer on a fibreglass boat, you can opt for a through-hull or shoot-through-the-hull transducer. Unlike thru-hull transducers, shoot-through-the-hull transducers are suitable for fibreglass boats as they can be mounted inside the hull without drilling any holes. This is possible because fibreglass has similar sonar characteristics as water, allowing the sonar signal to pass through with minimal loss.

However, it's important to note that this method will not work for Side Imaging transducers. Additionally, the hull of the boat must be single-layer construction and should not contain any foam or air pockets in the lamination, as these can interfere with the sonar signal. To ensure a strong connection, two-part slow-cure epoxy is required to glue the transducer in place.

When choosing a location for your shoot-through-the-hull transducer, it's important to select an area that is free of any liners, coring, or double-hull construction. You may need to remove the inside layer and coring and build up glass before installing the transducer. The transducer should be glued directly to the hull, ensuring that it is secure and does not move.

Keep in mind that you may experience a decrease in clarity and functionality when using a shoot-through-the-hull transducer compared to a traditional transom mount. However, with experimentation, high-speed operation comparable to transom mounting can be achieved.

Internal Transducer Installation: This option eliminates the need for an external transducer, which can be prone to damage

Internal transducer installation is a convenient option for Triton aluminum bass boat owners. It eliminates the need for an external transducer, which can be prone to damage and get in the way. This installation method ensures that the transducer is protected within the boat, reducing the risk of damage from external forces or objects in the water.

When installing a transducer internally, it is important to consider the placement to ensure optimal performance. The transducer should be placed in an area where it has a clear and undisturbed flow of water to transmit and receive sonar signals effectively. Additionally, it is crucial to use an adhesive that is specifically designed for marine use to secure the transducer to the boat. This will ensure that the transducer remains firmly in place despite the constant exposure to water.

To install the transducer, start by determining the ideal location, considering factors such as propeller wash, water turbulence from the outboard motor, and any accessories attached to the stern. Clean the mounting area thoroughly to ensure proper adhesion. Apply a marine-grade adhesive to the back of the transducer and press it firmly onto the chosen surface, following the adhesive manufacturer's instructions for curing time.

It is important to note that internal transducer installation may not be suitable for all aluminum boats. Some boats may have hull designs that interfere with the transducer's performance, requiring an external mount. However, for boats like the Triton aluminum bass boat, internal installation can be a great option.

By installing the transducer internally, you can enjoy the benefits of a well-functioning sonar system without the worry of damaging an external transducer. This installation method streamlines the look of your boat, improves safety, and enhances your fishing experience by providing accurate and reliable sonar readings.

Transducer Mounting Plates: These allow for fine-tuning and easy relocation without drilling additional holes

Transducer mounting plates are a convenient option for boat owners as they eliminate the need for an external transducer, which can be prone to damage and get in the way. They also provide the freedom to adjust or move your transducers without drilling more holes in the boat's transom. This is especially useful if you have multiple transducers to mount.

Transducer mounting plates are typically made from durable, synthetic materials such as polyethylene plastic or marine-grade PVC. They are fastened to the hull with small screws and marine silicone adhesive, which helps seal the holes and keep the plate securely in place. The plates are pre-drilled and countersunk, making installation quick and easy. They can accommodate multiple accessories, with some models offering space for up to four devices.

When using a transducer mounting plate, it is important to consider the hull design of your boat. For aluminium boats, a transom mount is a common and popular option. This involves attaching the transducer to the back of the hull above the waterline, ensuring there is no interference from strakes or other protrusions that could disrupt water flow and affect sonar readings.

Overall, transducer mounting plates offer a simple and effective solution for boat owners looking to install marine electronics without the hassle of drilling multiple holes. By providing a secure and adjustable platform, these plates ensure that your transducers can be fine-tuned and easily relocated without compromising the integrity of your boat's hull.

Frequently asked questions