If you need help building your boat, you’ve come to the right place! search for boat trailer plans and boat plans, all available for digital download.. Hull type: modified sled/garvey with 12 degree deadrise, developed for sheet plywood or aluminum with built-in chine flat spray rail. power: single or twin outboard. Free plans: absolutely free plans (links to free online boat plans) ariawood boat works (plywood punts, jonboats and one-sheet boats) architectura navalis mercatoria.