altair industries driftboat plans altair offers complete plans and a construction guide for a 16′ mckenzie river drift boat. (added: 2-dec-2003 hits: 44766) 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. (photo at left: gayle and ken discussing his history in boat design.) after ken hankinson’s sudden retirement from the plan business in 2005, many were left.