Free plans for stitch and glue boatbuilding. many good free plywood contruction stitch and glue boat plan. stitch and glue plans are good wooden boat plans for beginners.. The boat uses developed panels of plywood, built over a jig. this means that hull panels can be full size and will drape over the frame without having to be cut into. What are the differences between drop stitch air and plywood floors? once inflated, a high pressure air floor becomes as rigid as a.