Wooden and plywood boat plans for amateur boatbuilders – excellent performance, simple construction, detailed step by step instructions for boats, canoes and. How to make the most out of your one sheet boat. the ultimate one sheet boat, prism: discussion on maximising the displacement. free boat plans and building instructions.. 11’6" eider duck punt: the eider is a simple plywood duck punt suitable for river and canal rowing and some quiet fishing. we have given her a small transom stern to.