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!. This pontoon cat is a versatile family day cruiser that can also be used as a party boat. learn how to build your own pontoon boat with our design plans!. 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.