Larry Graf, founder of Glacier Bay Catamarans in 1987, founded Aspen Power Catamarans in 2008 when he developed a new revolutionary patented hull design (Power Proa) and drive system for power catamarans. The hulls, while identical in profile, are very different in plan view with one being 35% thinner. The non-symmetrical hulls are shaped to compensate for the offset thrust and torque, and since both forces are proportional to speed and thrust, the boat runs straight. Additionally, it has only one engine, shaft, prop, and keel reducing appendage drag 20%. The combination of new hull design and reduced appendage drag increases efficiency as much as 70% over mono hulls. In October 2014, the hull design was judged as the best multi hull in the world in the 30- to 39-foot category by the AIM Marine Group Editors.