When building a boat, you must eliminate any twist in the hull. Skipping this step may give you some real performance problems on the water. Your boat could dangerously cavitate, or worse, it may become totally worthless. It would be awful to put all that hard work into building your own boat, only to fail once it’s in the water.
There are a couple ways to level your boat’s hull to eliminate twist. Using a laser is one of them. Experimenting on my boat, I used two different lasers for leveling my hull. Considering the accuracy of a laser, I just knew it would be the preferred method. That, and they’re so darn cool!
Lasers have a couple of drawbacks. In addition to the set up time, the laser requires a straight line of site. Once your up and running, you then have to hope the laser is telling the truth and isn’t out of calibration.
Don’t overcomplicate things. I often do, and this was one of those times. The lasers I used, a Dewalt and Ryobi, did work for leveling the hull. However, the ancient alternative was a much better option.
The Egyptians used water to level the foundation of the ancient pyramids. They dug a trough all the way around the site and filled it up with water. The water, finding it’s own level, gave them a consistent point from which to set the foundation.
Their 5,000 method is the way to go. Skip the lasers. Setting up the water level is fast, and reading the measurement is even faster. Another plus is it works in a bright shop, whereas seeing the laser can be difficult.
A water level is more accurate. In addition to the ease of setting up the water level, I found measuring with water to be more accurate than with a laser. The reason is the laser beam can be as much as 1/8th of an inch thick. Whereas the water level is almost flat and has no margin of error.
Purchase tubing your boat will already require, like for a live well or drain tube. I used the tube I purchased for the drains on my navigation light and push pole holders. Make sure to buy enough to level the hull.
Have a friend or family member help you with the hose. The water will quickly find it’s level. Put a couple drops of food coloring in each end of the tube. This makes the water much easier to see. You’ll notice the water dips a little in the center, use the lowest point. Always recheck the level if you move your boat stand, or if you have any concern that something may have changed.
Getting the boat level is easy with a micro-adjustable boat stand. If you built your stand similar to mine, then your just minutes away from leveling the hull with the twist of a wrench.
However, if you have a fixed boat stand, then you’ll want to use shims. A deck of cards works well for lifting the hull a few thousandths of an inch. Shim your stand and your all done.