Pontoon boat plans can be used to help you build a pontoon boat you can use for all of your water activities. pontoon boats are known for their flat-bottomed. Picture of completed boat find this pin and more on boat plans by craftantix. canoe, kayak, and other boat plans for the amateur boat builder. free pontoon boat plans. This composite pontoon catamaran is versatile, so you can build the boat to fit your specifications. order the plan and the cat 20 kit at bateau..