At everythingpontoon we offer marine plywood by the sheet or in quantities. home; boat seating. premium series pontoon seating. individual pontoon seats; front. Welcome to our marine plywood online store! why marine plywood? small boats: while small stitch and glue boats can be successfully built with inexpensive. Clark craft offers hundreds of boat plans, design patterns and complete boat kits, and a full line of boat building supplies and accessories for the amateur boatbuilder..