"popular science" magazine and "popular mechanics" back issues can viewed on line at google books. all these free boat plans can be built by anyone with a modicum of. Free kayak and canoe plans what is the difference between free and paid for plans? often nothing! proven free canoe and kayak plans have been made available. This is a selection on some of the free motorboat plans that were published in "popular mechanics", "popular science" and the "boat builder handbook" yours to.