DIY Flip-Back Seat Livewell Plumbing Guide

Are you tired of sacrificing valuable deck space for bulky, standalone livewells on your jon boat or aluminum skiff? Many anglers struggle with the dilemma of wanting fresh bait without compromising their casting room or seating comfort. By converting a DIY flip back boat seat as a livewell plumbing system, you can solve both problems simultaneously, creating a sleek, functional, and space-saving solution that keeps your shiners or minnows lively and healthy.

This guide is designed for the weekend warrior and the serious angler alike. We will walk you through the engineering logic, the necessary materials, and the step-by-step installation process to ensure your setup is not only functional but also safe and durable on the water.

Why Combine a Flip-Back Seat with a Livewell?

Before diving into the wrenches and PVC pipes, it is crucial to understand why this modification is gaining popularity among US boaters. The primary driver is space optimization. In smaller vessels, every square inch counts. A standard livewell takes up floor space that could be used for tackle boxes or cooler storage.

Furthermore, a flip-back seat offers ergonomic benefits. When you are actively trolling or drifting, you need a comfortable perch. When you are casting or fighting a fish, you need that seat out of the way. Integrating the two means you never have to choose between comfort and utility.

The Space-Saving Advantage

• Dual Functionality: One unit serves as seating and bait storage.
• Center of Gravity: Placing the water weight (livewell) under the seat keeps the boat’s center of gravity low and centered, improving stability.
• Aesthetics: It looks professional and custom-built, increasing the resale value of your vessel.

Essential Tools and Materials List

To execute this DIY flip back boat seat as a livewell plumbing project successfully, you need the right gear. Using marine-grade materials is non-negotiable due to the corrosive nature of freshwater and saltwater environments.

Materials Needed

1. Flip-Back Boat Seat: Ensure it has a sturdy base plate. Aluminum or heavy-duty plastic is preferred.
2. Livewell Tank: A rectangular polyethylene tank that fits beneath the seat footprint. Common sizes are 5–7 gallons.
3. Marine-Grade PVC Piping: ½ inch or ¾ inch diameter, depending on your pump output.
4. Thru-Hull Fittings: Stainless steel or bronze to prevent rust.
5. Live Well Pump: A submersible pump rated for at least 500 GPH (Gallons Per Hour).
6. Hose Clamps: Stainless steel, worm-gear style.
7. Silicone Marine Sealant: 100% silicone, UV resistant.
8. Overflow Drain Kit: To prevent overfilling and siphoning.

Tools Required

• Jigsaw or Hole Saw kit
• Drill with metal/wood bits
• Wrench set (adjustable and socket)
• Measuring tape and marker
• Deburring tool (for cleaning cut PVC edges)

Pro Tip: Always measure twice and cut once. The fit between the seat base and the tank must be precise to avoid rattling while the boat is in motion.

Step-by-Step Installation Guide

This section breaks down the complex plumbing into manageable steps. Follow these instructions carefully to ensure a leak-free system.

Step 1: Planning the Layout

Place your livewell tank on the deck where you intend to install the seat. Mark the outline. You must ensure there is enough clearance beneath the deck for the tank depth. If your boat has stringers underneath, you may need to build a small platform or choose a shallower tank.

Check the position of the seat hinges. The plumbing lines must not interfere with the mechanical action of the seat flipping back. Leave at least 2 inches of clearance around moving parts.

Step 2: Cutting the Deck and Mounting the Tank

If your deck is not already cut for a livewell, use your jigsaw to cut an opening slightly larger than the tank’s rim. Most modern tanks have a flange that sits on top of the deck.

1. Dry-fit the tank into the hole.
2. Apply a generous bead of marine silicone sealant around the flange.
3. Secure the tank using stainless steel screws provided with the kit. Wipe away excess silicone immediately.
4. Allow the silicone to cure for at least 24 hours before proceeding. This ensures a watertight seal, critical for preventing deck rot.

Step 3: Installing the Flip-Back Seat Base

Now, mount the seat base plate over the tank area.

• Align the base plate so that the seat, when closed, covers the tank opening completely or aesthetically frames it.
• Drill pilot holes for the mounting bolts.
• Use backing plates underneath the deck if possible to distribute the load. This prevents the seat from ripping out during rough waters.

Step 4: Plumbing the Intake and Output

This is the core of the DIY flip back boat seat as a livewell plumbing system. You need two main lines: the intake (bringing water in) and the overflow/drain (letting water out).

The Intake Line:

1. Install a thru-hull fitting on the transom or the side of the hull, below the waterline.
2. Connect a pickup tube with a screen filter to prevent debris from entering the pump.
3. Run the PVC pipe from the thru-hull to the submersible pump inside the tank.
4. Connect the pump outlet to a spray bar or a directional nozzle inside the tank. A spray bar is preferred as it oxygenates the water more effectively by agitating the surface.

The Overflow Line:

1. Install an overflow fitting near the top of the tank (about 1 inch from the rim).
2. Connect this to a drain line that exits through the hull above the waterline.
3. Crucial: Install a loop in the drain line (a P-trap configuration) or a vented loop to prevent siphoning. If you don’t do this, your livewell will drain itself dry when the boat is moving fast.

For detailed standards on marine plumbing safety, refer to the American Boat and Yacht Council (ABYC) guidelines which outline best practices for fluid systems on small craft.

Step 5: Electrical Connections

Connect your submersible pump to a switched power source.

• Use marine-grade tinned copper wire to resist corrosion.
• Install an inline fuse (usually 3–5 amps, check your pump’s manual) within 18 inches of the power source.
• Route wires away from sharp edges and secure them with cable clamps every 18 inches.

Troubleshooting Common Issues

Even with careful planning, issues can arise. Here is how to address the most common problems.

Maintenance Tips for Longevity

To keep your DIY flip back boat seat as a livewell plumbing system in top shape, regular maintenance is key.

1. Flush After Every Use: Run fresh water through the system for 5 minutes to remove slime and bacteria.
2. Inspect Seals: Check the silicone around the tank flange monthly for cracks or peeling.
3. Lubricate Hinges: Apply a waterproof lubricant to the seat hinges to prevent seizing.
4. Winterize: If you store your boat in freezing climates, drain all water from the pump and lines to prevent cracking.

FAQ Section

Q1: Can I use this setup for saltwater fishing?

A: Yes, but you must use strictly corrosion-resistant materials. Replace standard stainless steel with 316-grade stainless or bronze fittings. Additionally, rinse the entire system with fresh water after every saltwater trip to prevent galvanic corrosion.

Q2: How much does a DIY flip back boat seat livewell cost?

A: Depending on the quality of components, a DIY setup typically costs between $150 and $300. This is significantly cheaper than buying a pre-installed commercial unit, which can range from $500 to $1,000+ including labor.

Q3: Will the weight of the water affect my boat’s performance?

A: Water weighs approximately 8.34 pounds per gallon. A 7-gallon tank adds about 60 pounds. While this is noticeable, placing it centrally under the seat helps maintain balance. However, always be mindful of your boat’s total capacity plate limits.

Q4: Do I need a separate aerator?

A: Not necessarily. If your pump creates a strong surface agitation via a spray bar, it often provides sufficient oxygen for minnows or shiners for short trips. For longer trips or sensitive bait species, adding a small battery-operated aerator stone is a wise backup.

Q5: Can I convert an existing fixed seat?

A: Yes, but it requires more fabrication. You would need to cut the existing pedestal and weld or bolt a hinge mechanism. It is generally easier and safer to buy a dedicated flip-back seat base designed for marine use.

Q6: What size pump do I need?

A: For a 5–7 gallon tank, a pump rated at 500–800 GPH is ideal. You want to turn over the entire volume of water in the tank every 2–3 minutes to keep oxygen levels high and waste products low.

Conclusion

Creating a DIY flip back boat seat as a livewell plumbing system is a rewarding project that enhances both the functionality and comfort of your fishing boat. By following this guide, you ensure a professional-grade installation that keeps your bait fresh and your deck clear.

Remember, the key to success lies in precise measurements, quality marine-grade materials, and thorough sealing. Don’t rush the curing process for the silicone, and always test your system on land before hitting the water.

Did you find this guide helpful? Share this article with your fishing buddies on Facebook or Twitter, and let us know in the comments if you plan to try this modification on your next boat upgrade! Happy fishing!