Building fuel tanks is a delicate matter, especially for boats, where safety must be your very first concern. Usually boat fuel tanks are built out of stainless steel and/or diferent plastic materials. You can find all sorts of fuel tanks on the market, from special fuel resistant PVC to a fiberglass and epoxy build fuel tanks and steel tanks. For a small boat, the best and cheapest thing to go with is a simple plastic fuel tank. They come in variety of sizes and shapes so you can find one that fits your boat best.
I usually preform some modifications on my boat before summer and this year I decided that I will try to gain some extra space under the back seat of my boat, and decided to modify the double bottom of my boat and install a custom made boat fuel tank inside the double floor. Of course my boat wasn’t designed for this kind of fuel tank so I will naturally have to modify everything. By this I mean, that I will need a little extra strength to be added to the original bottom and make some kind of fuel tank brackets that will hold the tank in place. I will also need a custom made fuel tank.