Build a flat bottom jon boat plans . these plans are to build a flat bottom fishing jon boat. fisherman who like to work the shallow backwaters and weed. We have power boat building designs of all types such as power cats, cruisers, and more. view jon boat deck plans & boat cabin plans for more details.. The boat went together great, especially for my first aluminum boat. the concept of 3d boat plans are an excellent idea and are incredibly easy to follow..