Scroll down this page for many more plans. this a page of links to some favourite free boat plans at intheboatshed.net. they’ve been chosen because they are derived. 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.. Simplicity boats is about sharing information that helps people expereience the fun of boat building for the least investment of time, skills, or materials..