Originally designed to use a jet drive with an inboard motor, this boat can be constructed to use a 20-50hp outboard motor. flat bottomed punts are not. The plans. this is a 15’8" work/fishing punt, placement of punt parts on four sheets of plywood. for a rough working boat use 12 mm (1/2") for the bottom,. Boat plans to build your own boat.wood boat plans – helpful tips for finding good wood boat plans.