Boat plans for the 12 imagine what two weekends, the plans for this fast build pirogue and two sheets of plywood will do?. 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. The oldest business of it’s kind. since our first plans were sold for home boat construction in 1938, more than 100,000 hartley boats.