Stitch-and-glue construction, along with the development of epoxy and modern mahogany marine plywood, has revolutionized and revitalized wooden boat building. this. Spira international wooden boat plans. ultralight stitch and glue boats; 11′ otters point 13′ juneau follow spira boats on:. Wood & plywood info home / boat plans & kits catalog this directory includes all of the plans that are specifically designed for stitch and glue construction..