A large number of aluminum single hull (monohull) boat designs (plans) that serve a variety of purposes. these include orcas, outbacks, sitkas, sportsters, sport.  altair industries driftboat plans altair offers complete plans and a construction guide for a 16′ mckenzie river drift boat. (added: 2-dec-2003 hits: 44816) my. Boden boat plans professionally designed ocean proven. thousands of boden designs have been built from the stock plans available. many have completed world circum.