Balancing An Aluminum Boat: Tips And Tricks

Aluminium boats are more susceptible to weight imbalances than fibreglass boats because their hulls are lighter. When it comes to balancing an aluminium boat, weight distribution is key. Shifting heavy items to the back of the boat will improve its top speed and handling. However, if you're going to be fishing in shallow water, moving heavy gear to the front will help you get on the plane faster.

To reduce bouncing, you can add weight to the bow of the boat, install trim tabs, or use suspension seats.

Keep your boat dry to prevent mould, rusting, and odour

Keeping your boat dry is essential to prevent mould, rusting, and odour. Here are some tips to achieve that:

Eliminate Water Ingress

Firstly, it is crucial to prevent water from entering your boat. Check all seals around deck-penetrating hardware, such as hatches, stanchions, cleats, ports, vents, windlasses, and bow rollers. Ensure that water is not seeping through these seals into the deck core. Additionally, pay attention to scuppers, thru-hulls, hull joins, and the bilge. Keep scuppers clog-free, reseal thru-hulls if necessary, and regularly check that bilge pumps are functioning correctly.

Use a Boat Cover

Invest in a good boat cover to protect your boat from the elements. Ensure the cover is properly vented to allow airflow while keeping moisture out. Prevent pooling on the cover, as pooled water can find its way into your boat. If using a tight cover like shrink wrap, add active ventilation, such as solar fans, to the cover's vents.

Ventilate Your Boat

Proper ventilation is key to keeping your boat dry. Install passive vents like cowls or dorades, or active vents like solar-powered fans, to promote airflow throughout the boat. Leave cupboards, lockers, rooms, and bilge covers open to ensure all areas are exposed to airflow. If using active vents, ensure they are placed for intake and exhaust to create airflow throughout, leaving no stagnant areas.

Reduce Relative Humidity

Take measures to reduce the relative humidity within your boat. This can be done by using electric dehumidifiers, such as the Eva-Dry unit, or products like the DryWave Air Dryer, which raise the ambient dew point to inhibit condensation. For larger boats, consider a bigger dehumidifier that allows you to set the desired humidity level. Chemical-based desiccants, such as products from DampRid, Dri-Z-Air, and NoDamp, are also effective at absorbing moisture.

Cover Windows and Hatches

To reduce condensation, cover windows and hatches with a protective layer, either from the inside, outside, or both. This helps reduce the temperature differential on the hatch surface, minimizing condensation build-up. Additionally, adding a protective layer of plastic sheeting inside creates an excellent thermal barrier, further reducing condensation.

Keep Your Boat Clean

Finally, regularly clean your boat to remove any mould or mildew that may have already formed. Wipe down surfaces with a 10% bleach solution or an all-natural product like Kanberra Gel, which uses Australian Tea Tree Oils to neutralize mould and bacteria while providing long-lasting protection.

Distribute weight to the front of the boat

To balance an aluminium boat, it is important to distribute weight to the front of the boat. Here are some tips to help you achieve this:

Firstly, consider moving heavier items such as batteries, fuel tanks, and tackle boxes to the front of the boat. By relocating these items, you can significantly improve the balance and performance of your boat. This strategy is particularly effective for aluminium boats, as they are more susceptible to weight distribution issues due to their lighter hulls.

Another strategy is to pay attention to the placement of your fishing gear. For example, store crankbaits and spinnerbaits towards the centre of the boat, as this will prevent the load from "pushing down" on the periphery, which can cause more drag. Additionally, try to keep terminal tackle such as hooks, sinkers, and soft plastics in the aft storage areas. This will help to reduce weight at the front of the boat.

If you have a trolling motor, consider moving its battery to the front of the boat as well. This can not only improve weight distribution but also provide easier access when needed.

When making adjustments, remember that it's not just about the weight but also its location in the boat. Even redistributing a small amount of weight can make a noticeable difference in how your boat handles.

Finally, be mindful of safety when making any modifications. Ensure that any fuel lines you use are approved and rated for marine use to prevent leakage and sparks. Regularly inspect your fuel lines for sun damage and keep them protected.

Use trim tabs to reduce bouncing

Aluminium boats are more prone to bouncing due to their weight. Trim tabs can be used to reduce this bouncing.

Trim tabs, also known as flaps, are devices that optimise the performance and stability of a boat. They allow fine adjustments to the boat's attitude, improving fuel efficiency, comfort, and safety.

To reduce bouncing, the trim tabs should be lowered in rough seas. This transfers the boat's weight forward, preventing the bow from slamming into the water. As sea conditions improve, the trim tabs can be gradually raised until just before the bow starts to bounce again. This is the limit.

When departing, the trim tabs should be fully raised to ensure the boat has the least resistance when starting navigation. To help the boat plane quickly, gradually lower the trim tabs. This will lift the stern and lower the bow, reducing drag and allowing the boat to reach planing speed more quickly. Once on a plane, adjust the trim tabs to maintain the desired attitude.

If the boat is leaning to one side, lower the trim tab on the same side or raise the opposite side with light touches on the control until the boat is level. At cruising speed, lower the trim tabs just enough to keep the bow low and prevent slamming. However, avoid lowering them too much, as this increases drag, fuel consumption, and reduces speed.

Trim tabs can also be used to correct porpoising, a condition where the bow rises out of the water repeatedly, creating a rhythmic bouncing effect. By pressing the "Bow Down" button in half-second bursts, the trim tabs will deflect, and the porpoising will subside while maintaining or increasing speed.

When using trim tabs, it is important to operate them in short half-second bursts and allow the boat to react before making another adjustment. This will help avoid over-trimming, which can cause the boat to "plow" or "bow-steer."

Clean your boat thoroughly

Cleaning an aluminum boat is essential to maintaining its appearance and performance. Continuous use can cause dirt and grime to build up on the hull, affecting the boat's speed and fuel economy. Therefore, it is crucial to clean your boat thoroughly and regularly. Here are some detailed instructions to achieve a spotless and well-maintained aluminum boat:

Prepare the Boat for Cleaning

Before beginning the cleaning process, ensure you have all the necessary equipment and products. This includes a garden hose, scrubber or sponge, bucket, car soap or detergent, and an aluminum boat cleaner. It is also recommended to wear protective gear, such as goggles and gloves, to shield your eyes and hands from the cleaning agents. Choose a day that isn't too hot, as direct sunlight can heat the aluminum, making it uncomfortable to work with. Position the boat on its trailer in a shaded area with ample space for cleaning.

Initial Wash with Soap and Water

Start by spraying down the aluminum surfaces to loosen any dirt and grime. Fill your bucket with hot water and add car soap or a mild detergent. Use a sponge or scrubber to apply the soapy mixture to the boat, scrubbing vigorously to remove dirt. For stubborn areas, you can use steel wool for a more intensive clean. Rinse the boat thoroughly with water to remove the soap and loosened dirt.

Apply Aluminum Boat Cleaning Solution

After the initial wash, it's time to use a dedicated aluminum boat cleaner. These products are designed to cut through the layer of oxidation that forms on aluminum due to its reaction with air. Carefully read the instructions on the cleaning product and dilute the concentrate with water as directed. Soak your scrubbing brush in the solution and thoroughly scrub all aluminum surfaces. Pay extra attention to any areas that were not adequately cleaned during the initial wash. Once you've scrubbed the entire hull, refer to the product instructions to determine whether the solution needs time to set or can be rinsed off immediately.

Buffing for a High Shine

The final step in the cleaning process is buffing, which restores the signature shine of aluminum and protects it from the elements. You can choose to buff by hand or use a buffing machine, depending on the size of your boat and the level of oxidation. Apply aluminum polish to a buffing cloth or pad and work it into the aluminum using circular motions. If using a buffing machine, start the machine and apply the polish to the pad while it's in motion. Move the pad slowly and deliberately across the aluminum surfaces, ensuring thorough coverage. Remember to inspect and clear any buildup on the buffing pad using a buffing rake.

By following these comprehensive steps, you will be able to maintain the cleanliness and shine of your aluminum boat, ensuring optimal performance and a sleek appearance.

Take care of fuel tanks

To balance an aluminium boat, you need to consider the weight distribution of your load. While some items are necessary, such as PFDs, flare guns, and tools, it's the "fun stuff" like tackle, rods, and baits that require scrutiny. Shifting heavy items to the back of the boat can improve top-end speed and handling. Now, let's focus on taking care of the fuel tanks:

Choose the Right Fuel Tank Material

Aluminium fuel tanks, when properly installed, can be an excellent choice for your boat. They are often self-protecting and long-lasting. However, it's crucial to avoid trapping water near the tank, as severe corrosion can occur due to a lack of oxygen. This is known as "crevice corrosion." To prevent this, ensure adequate airflow around the tank and avoid using water-absorbent materials like wood in contact with it.

Install the Fuel Tank Correctly

When installing an aluminium fuel tank, follow these steps:

• Use the right materials: Avoid rubber or carbon-containing materials, as they can cause galvanic corrosion. Opt for stainless steel pipe fittings instead.
• Choose a stable surface: Mount the tank on the hull stringers, not directly on the bottom of the hull.
• Prevent crevice corrosion: Ensure that straps or securing devices don't create crevices that trap water near the tank.
• Avoid constant bilge water contact: Don't install the tank too deep in the bilge, as constant contact with bilge water can be detrimental.
• Use the proper fuel lines: Marine fuel lines are recommended as they are more flexible and UV-resistant. Ensure they are Coast Guard-approved and regularly inspect them for sun damage.

Maintain and Inspect the Fuel Tank Regularly

Regular maintenance and inspection of your fuel tank are crucial to ensure its longevity. Check for any signs of corrosion or damage, especially in areas where water may be trapped. Keep the tank dry and well-ventilated to prevent crevice corrosion. Inspect the fuel lines for any wear and tear, and replace them if necessary.

Consider Modifications for Better Balance

If you're concerned about weight distribution, consider making modifications to your fuel tank setup. For example, you can extend your gas tank towards the front of the boat to balance the weight, as long as you use the appropriate fuel lines and fittings. Additionally, consider the placement of other heavy items, such as batteries, to optimise the balance of your boat.

Frequently asked questions