5 Simple Steps to Build Your Own Custom Pontoon Boat

Did you know that, of the fastest boats ever made, a pontoon made the ranks?

That’s right—a pontoon boat ranked number five out of the top ten fastest boats.

Hitting a top speed of 114 mph, Brad Rowland’s South Bay 925CR has been described as the “world’s fastest pontoon boat.”

Equipped with powerful Mercury Promax 300X outboard engines, the pontoon boat set a new world record when it hit 99 knots at the Lake of the Ozarks Shootout in Missouri back in 2015.

You might not expect a pontoon to reach such high speeds, but that’s the beauty of customization.

Thanks to the many DIY boat kits now available to boating enthusiasts, you too can build your own pontoon boat and potentially rival Rowland’s aerodynamic vessel.

Why Build Your Own Pontoon Boat?

As someone who believes a floating structure should reflect the owner’s personality vividly, like a pine tree’s reflection on a landscaped lake, I know that I’d go down the DIY route if ever I had the chance.

After all, why not?

When you build your own pontoon boat, not only will you gain the satisfaction of completing the project yourself but also, you’ll have flexibility to build it to the specifications that suit your personal interests, needs and desires.

Furthermore, it’s up to you to decide what kind of engine you conceal beneath the shiny exterior of your watercraft, meaning that you can take the reins in terms of horsepower, torque and cruising range.

Previously, we discussed ways to personalize a boat with pontoon accessories, but this is the first time we’ve targeted the topic of boat building towards all you speed racers out there. From how much the pontoon boat will cost to choosing the correct GPS for your speedy outings, we’ve got you covered.

Without further ado, captain, let us take you on a literary voyage about how to build your own pontoon boat for high speed leisure, shall we?

5 Simple Steps to Build Your Own Custom Pontoon Boat

1. Buy a Kit or Go Full DIY

First things first, you need to determine just how much guidance you require for building a pontoon. Boat-building kits and do-it-yourself (DIY) options provide you with the freedom to bring your ideas to life.

Nonetheless, DIY might require a little more effort and experience on your part. For this reason, a pre-designed kit is a worthwhile choice, due to the fact you can put a personal touch on things, minus the confusion.

What’s more, boat kits tend to be a less costly alternative.

Catalogs ought to be studied thoroughly prior to selecting a kit from one of the many manufacturers in the business. Reputable brand names that sell build your own pontoon boat kits include:

After choosing and contacting a brand that sells a build your own pontoon boat kit, it will be time to choose a model, followed by the aesthetics, such as panel color, accent color, graphic and fence design, to name a few things.

We’ll shine a light on the interior/exterior features later to give you an idea of what options you can expect to be presented with.

This isn’t the most exciting part, however, as it’s the engine beneath the sculpted exterior that will affect your pontoon’s speed and performance.

2. Browse Pontoon Engine Options

A high-speed craft (HSC) won’t be capable of skimming the waves as quickly as the South Bay 925CR, unless it’s equipped with the best possible marine engine and power system.

Engines come in a broad spectrum of sizes, shapes and types, from engines with fuel efficient electronic fuel injection (EFI) systems, to diesel inboard engines with carbureted fuel systems.

It’s not just the speed you should be thinking about when you build your own pontoon boat for high speeds or leisure, but also the horsepower and weight.

You’ll have three main engine options to contemplate:

  • Inboards — Better suited to heavier boats, inboard systems are normally powered with diesel and are concealed out of sight. Pontoons don’t use inboard motors.
  • Outboards — An outboard motor is the typical, safe choice for a pontoon boat. Pontoon boats that are outboard-powered tend to have better fuel efficiency, power and speed.

Whether you’re doing a spot of DIY or constructing watercraft with the help of a build your own pontoon boat kit, you must choose the horsepower based on your water activity preferences.

A 250 to 300 HP engine will typically churn out 55 to 60 mph, depending on load.

If you’re not planning on participating in tournament fishing, racing or watersports like wakeboarding, such colossal horsepower won’t be entirely necessary.

Keep in mind that approximately 90% of sport/speed boats are fitted with a sterndrive engine. Avoid underpowering the pontoon and focus on finding one that guarantees good performance, even with heavy loads. Opt for good torque for towing sports, because power is essential for getting those wakeboarders up!

3. Selecting a Hull and Construction Materials

Now that you know how fast you want to be navigating the waters on your pontoon, you can pay attention to its design.

Don’t rush into choosing the hull and other major construction materials. It’s surprising just how much of an impact these choices can have on the boat’s performance, so do your research before coming to a conclusion here.

The hull must suit the pontoon’s size and intended usage. Below we discuss the four main hulls for fast boats:

  • Semi Displacement — These narrow hulls enhance performance at slow and fast speeds.
  • Medium Displacement — Water is pushed aside when this type of hull cuts through the water. Expect minimal propulsion with this type of pontoon boat hull.
  • Heavy Displacement — Ideal for long-distance cruising, heavy displacement hulls boast easy motion, thus allowing for comfort when things get a bit rough out at sea.
  • Planing Hull — Instead of pushing the water aside, this hull skims along the surface, making it perfect for increased speeds.

With your hull chosen, it’s time to think about the pontoon boat materials. Aluminum is an attractive material choice for boaters who want to get maximum power from their vessel. In fact, aluminum construction is lightweight and will stand the test of time.

A chemical-resistant option is ferro-cement, which is a concrete mixture applied to steel wire mesh.

Fiberglass is a top material of choice for recreational pontoon boats and it won’t hinder speed.

Composite wood panels will add to the aesthetic appeal and will give a speedboat a classy appearance.

4. Interior and Exterior Design

Comfort, functionality and personality are three factors that will come into play for this step. If entertaining is on the agenda, introduce interior elements like grab rails, drink holders and comfortable seating.

Curved corners will improve handling at high speed and a sculpted exterior structure with surface texturing will turn heads. The surface finish shouldn’t be too rough, as this can cause the boat to drag.

Broaden your field of vision with a wraparound windshield. By doing so, you can fixate your attention on where you’re going without worrying about water or bugs hitting you in the face.

Many build your own pontoon boat kits will also present the builder/buyer with the following interior and exterior design options:

  • Panel color
  • Accent color
  • Interior styling color
  • Floorplan
  • Underwater lighting
  • Fender system
  • Docking lights
  • Ladder
  • Stereo and sound
  • Furniture
  • Flooring

If you feel overwhelmed by the various options available, consider browsing the pontoon package options offered by your brand of choice.

Packages might even save you money, since they only include the necessary interior and exterior features for a particular purpose, such as convenience (check out the “Convenience Package” here).

5. Test Drive Your Own Pontoon Boat

With everything complete, all you have to do is take on the role of captain. Use this opportunity to experience how the boat handles, how quickly it gains momentum and how good the fuel economy is.

Should there be any problems, don’t be afraid to seek advice from a professional, whether it’s the person who sold you the build your own pontoon boat kit or a boat repair specialist.

Don’t forget to inspect the propeller pre-launch and always wash the salt residue off your boat with a soft-bristle brush after cutting through the water. Let’s not sidestep the subject of motor maintenance, either!

Periodically look for damage(s) and leaks near/on the fuel line to reduce the risks of a leak or corrosion occurring. Remember, the better you maintain your outboard motor, the longer your high-performance boat will be rivalling other vessels with its Va Va Voom.

Final Thoughts on Building Your Own Pontoon Boat

Tracking down a supplier of the highest quality materials and an accelerated motor will ensure the finished result is a real flying machine.

You don’t have to source everything directly and build the vessel from scratch to accomplish the task of boat building, though.

Kits are an ideal alternative to DIY when you build your own pontoon boat, simply because they’re cost-effective and don’t limit your ability to personalize the craft.


Bethan Rose is a full-time wanderluster, traveler and digital nomad with 7 years of experience in the freelance writing world. Based in Bali, she can be found using hammocks as an office for content curation when she is not cruising around Indonesian waters on surf and power boat charters.