Our pontoon boat designs are great for the builder who is looking for a party boat or family day cruiser. buy homemade pontoon boat plans at bateau. com!. No plans, i just made it up as i went along. scratch built mostly from stuff i already had in my garage. so-far it doesn’t leak! next is to find a motor for it. Using one of these boat plans, you will be able to build the boat you have dreamed of for years. these boat plans come in many variations and there are powerboats.