Learn how to build yourself a boat in your backyard. our complete boat plans collection is available for free and immediate download. it is the largest wood boat. Spira international wooden boat plans. following are the stock plans available for the various types of boats, separated into the different categories.. Tolman skiffs: boat plans in book form. concise step by step instructions to build a 20 to 24 foot plywood / epoxy stitch and glue skiff.