No plans, i just made it up as i went along. scratch built mostly from stuff i already had in my garage. so-far it doesn’t leak! next is to find a motor. Http://bit.do/myboatplans-plywood – plywood boat plans – how to build a plywood boat with plans,blueprints,step-by-step instructions and more. use link for. I’m starting this topic to both log my experiments and to petition contributions and ideas from others. the basic premise, to build a strong, inexpensive inflatable boat..