Drift boat plans free shipping to us & ak • $30 shipping to canada • please use the "contact us" page for ordering or. 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. Stem lumber seat fwd side plank aft side clamp zinc coated siding nails carpenter’s square aligns keel with each frame before attaching angle.