altair industries driftboat plans altair offers complete plans and a construction guide for a 16′ mckenzie river drift boat. (added: 2-dec-2003 hits: 44680) my. 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. 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.