Easy to follow trailer plans for the construction of box, cage, camper, flatbed car carrier, motorbike, tipping & enclosed trailers.. Links to boat plans some free boat plans, boat building information including plywood stitch and glue. full range of boat plans from sophisticated yachts to plywood. Boat plans catalog – 300 boats you can build! boatbuilding supplies & epoxy; inboard hardware; new – electrical design plans; books, dvd’s & audio.