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. Using one of these boat plans, you will be able to build the boat you have dreamed of for years. these boat plans come in many variations and there are powerboats. If you are interested in building your own boat, then jon boat plans would be ideal. jon boats can be used for a variety of boating needs. they can be made from.