Installing Downriggers: Aluminum Boat Setup Guide

Installing downriggers on an aluminium boat can be a tricky endeavour. It's important to consider the size and type of your boat, as well as your personal fishing style, when deciding on the best mounting location. For smaller boats, mounting the downriggers at the rear of the boat near the stern is a popular option as it provides more room for movement and reduces the risk of tipping. However, this may not be ideal if someone is sitting at the back of the boat, in which case a side mount could be considered. When it comes to securing the downriggers, custom brackets, concrete anchors, and plywood backing plates are all popular options. It's also important to ensure that the mounting location can withstand the weight and tension of the downrigger setup to avoid metal fatigue and potential failure.

Using a Scotty website manual to find the best mounting system

When installing downriggers on an aluminium boat, it is important to find the best mounting system to ensure your equipment is secure and safe. The Scotty website is a great resource for this, with manuals available for download that include pictures of the various mounting systems.

The first step is to identify the specific model of your Scotty downrigger. The website provides manuals for both electric and manual models, each with its own unique mounting system. Once you have identified your model, download the corresponding manual from the website.

The manual will provide detailed instructions on how to install your downrigger, including the required tools and hardware. It is important to follow these instructions carefully to ensure a safe and secure installation. The manual will also include pictures of the different mounting systems, allowing you to choose the best option for your boat.

Scotty offers a range of mounting systems, including ball mounting systems, electronics mounts, post mounts, and rail mounts. Each system has specific advantages and applications, so it is important to select the one that best suits your boat and fishing needs. For example, if you have a smaller boat, you may want to consider a side mount, but be aware of the weight distribution and potential metal fatigue.

In addition to the mounting system, Scotty also offers a range of accessories, such as sounder plates, top plates, and base plates, that can enhance the functionality and stability of your downrigger. The website provides clear instructions on how to use these accessories effectively. Remember, when in doubt, it is always better to have too much support than not enough when it comes to mounting downriggers.

Using aluminium brackets to put stress directly on the top of the gunnel

When installing downriggers on an aluminium boat, it is important to consider the stress that will be placed on the gunnel. One way to address this is by using aluminium brackets to distribute the weight and reinforce the structure. Here is a step-by-step guide on how to use aluminium brackets to put stress directly on the top of the gunnel when installing downriggers:

Step 1: Assess the Boat's Construction

Before installing downriggers on an aluminium boat, it is crucial to evaluate the construction of the boat. The strength and thickness of the aluminium gunnel will determine whether a backing plate is necessary. Some boats may have a heavy-gauge construction that can withstand the weight without additional support. However, it is generally recommended to err on the side of caution and include a backing plate for reinforcement.

Step 2: Choose the Appropriate Backing Plate Material

If a backing plate is required, aluminium is the typical material of choice for aluminium boats. Avoid using wood as it is not compatible with aluminium. Additionally, do not use pressure-treated wood as it is not suitable for this application. Ensure that the backing plate is made of the same material as the boat to prevent corrosion and ensure longevity.

Step 3: Determine the Thickness of the Backing Plate

The thickness of the backing plate is crucial for providing adequate support. A minimum thickness of 1/2 inch is recommended for effective reinforcement. Opt for plywood or hardwood backing plates, as they offer better support compared to fender washers. Make sure the backing plate is wider than the mounting area to distribute the weight more evenly.

Step 4: Prepare the Mounting Surface

Clean and prepare the mounting surface on the gunnel. If necessary, apply a marine epoxy coating to protect the surface and enhance the adhesion of the backing plate. Ensure the surface is free of any debris or substances that may interfere with the installation.

Step 5: Install the Backing Plate

Secure the aluminium backing plate to the gunnel using bolts or other appropriate fasteners. Ensure that the backing plate is firmly attached and able to withstand the weight and stress of the downrigger. Consider bolting the backing plate to both the outside of the hull and under the deck for added support.

Step 6: Install the Downrigger

With the backing plate securely in place, you can now install the downrigger according to the manufacturer's instructions. Ensure that the downrigger is mounted securely to the backing plate, distributing the weight evenly. Follow the recommended procedures for your specific downrigger model and aluminium boat.

By following these steps and using aluminium brackets with backing plates, you can effectively put stress directly on the top of the gunnel when installing downriggers on an aluminium boat. This will help prevent metal fatigue and ensure a sturdy and safe installation. Always exercise caution and consult with boating professionals or manufacturers' guidelines if you are unsure about any aspect of the installation process.

Reinforcing with an aluminium channel to prevent the inner rail from ripping off

When installing downriggers on an aluminium boat, it is important to reinforce the inner rail with an aluminium channel to prevent it from ripping off. This can be achieved by fastening an aluminium channel across to each side of the boat. This will provide extra support and ensure that the downrigger does not rip off, causing damage or loss of equipment.

To do this, one can follow these steps:

• Measure the width of the boat at the desired location for the downrigger.
• Cut an aluminium channel to the measured width, ensuring that it fits snugly across the boat.
• Drill holes in the aluminium channel that align with the mounting holes on the downrigger.
• Fasten the aluminium channel to the boat using appropriate screws and washers.
• Attach the downrigger to the aluminium channel by bolting it through the aligned holes.

It is important to consider the weight and stress that the downrigger will place on the boat and ensure that the aluminium channel is securely fastened to provide adequate support. As mentioned by boat owners, "You can never have too much support for a downrigger as the stress and flexing is considerable for a small boat." Therefore, taking the time to properly reinforce the inner rail with an aluminium channel will help prevent issues and ensure a safe and enjoyable boating experience.

Using coarse threaded screws and a wood backer to secure the mounting plate

To install downriggers on an aluminium boat, you can use coarse-threaded screws and a wood backer to secure the mounting plate.

First, you will need to determine the best location for your downrigger, taking into account the size and shape of your boat, as well as the intended use. It is important to place the downrigger in an area that is easily accessible and does not obstruct your movement while fishing.

Once you have identified the desired location, you can begin the installation process. If possible, remove any cushions or coverings from the mounting area to expose the aluminium surface underneath. This will allow you to work with a clean and level surface.

Next, you will need to create a template for the mounting plate. This can be done by tracing the outline of the mounting plate onto a piece of cardboard or thin wood. Cut out the template and use it to mark the drilling holes on the aluminium surface. It is important to ensure that the drilling holes are aligned correctly and spaced evenly to provide a secure fit for the mounting plate.

Before drilling, it is essential to measure the thickness of the aluminium surface. This will help you select the appropriate type and length of coarse-threaded screws. The screws should be long enough to penetrate the aluminium and provide a strong hold, without being too long that they protrude on the other side.

Drill the holes at the marked locations, being careful to maintain a straight and perpendicular angle to the surface. It is recommended to use a drill bit that is slightly smaller than the screw size to create a tight and secure fit.

With the holes drilled, you can now prepare the wood backer. Cut a piece of wood that is slightly larger than the mounting plate. This will provide a sturdy base for the screws and distribute the weight of the downrigger more evenly. Drill corresponding holes in the wood backer that align with the holes in the aluminium surface.

Place the wood backer against the aluminium surface and secure it in place by driving the coarse-threaded screws through the wood and into the drilled holes. Ensure that the screws are tight and secure, creating a strong connection between the wood backer and the aluminium boat.

Finally, attach the mounting plate of the downrigger to the wood backer. This can be done by using the appropriate screws or bolts provided with the downrigger. Follow the manufacturer's instructions for properly securing the mounting plate.

With the mounting plate securely attached, you can now attach the downrigger to the plate according to the manufacturer's instructions. Ensure that all connections are tight and secure before using the downrigger.

By using coarse-threaded screws and a wood backer, you can securely install downriggers on your aluminium boat, providing a strong and stable base for your fishing adventures.

Using a removable board across the back to mount the downriggers

Using a removable board across the back of your boat is a great way to mount downriggers, especially if you want to avoid drilling holes in your boat. This method provides a strong and stable base for your downriggers and can be easily removed when not in use. Here's a step-by-step guide to help you through the process:

Step 1: Materials and Planning

• Gather the necessary materials: a pressure-treated 2x8 board, stainless steel hardware, backing boards made of plywood or aluminium, fender washers, and welding equipment if you plan to weld brackets.
• Plan the placement of your downriggers, considering the number of downriggers you intend to use and the spacing required to avoid tangles.
• Decide on the number and placement of brackets to securely attach the board to the transom of your boat. Three brackets are often sufficient, but additional support may be needed depending on the number and weight of your downriggers.

Step 2: Prepare the Board

• Cut the board to the appropriate length, ensuring it fits securely across the back of your boat.
• Treat the board with a sealer to protect it from the elements.
• If desired, stain the board to match the aesthetic of your boat.

Step 3: Create the Brackets

• Weld brackets to the board that will attach to the transom of your boat. Ensure these brackets are sturdy and capable of withstanding the torque and load of the downriggers.
• Consider reinforcing the brackets with additional metal or using aluminium plates as backing for added strength.

Step 4: Mount the Board

• Attach the board to the transom of your boat using the welded brackets.
• Use stainless steel hardware, such as bolts or screws, to securely fasten the board in place.
• Ensure that the hardware penetrates the transom and reaches the backing boards to distribute the load and prevent pulling or weakening of the surrounding material.

Step 5: Install Downriggers

• Once the board is securely mounted, install your downriggers onto the board.
• Space the downriggers evenly, ensuring there is sufficient distance between the booms to prevent tangles.
• Consider adding additional accessories, such as rod holders or automatic ball retrievers, to enhance your fishing experience.

Remember to always practise good safety measures when working with boats and welding equipment. Enjoy your new downrigger setup and happy fishing!

Frequently asked questions