Miller withdrew his partnership from his sail-making company but the company retained its name of Miller and Whitworth. Soon after the 1974 Cup challenge, Miller changed his name to avoid confusion with his former company. Keen to prevent the possibility of there being any confusion surrounding his name and business interests in the future, he asked a friend who worked for Reader's Digest to find out the least-used surname within their membership. The result was Lexcen. "Ben" was the name of his dog. Bond challenged for the 1977 America's Cup using the Lexcen and Johan Valentijn designed 12M Australia against media mogul Ted Turner and again with a Lexcen modified Australia in 1980 against Dennis Conner, losing both times. After the 1980 challenge Lexcen realised that to win against the defenders, with their 100+ years of America's Cup experience, they would need a superior boat. His next design featured a host of advanced design features, not the least of which was a revolutionary winged keel, intended to lower the drag and to make the boat more stable and maneuverable in the water. The keel design reduced tip vortex, a turbulence resulting in conventional keels from the pressure differential between the windward (low pressure) and leeward (high pressure) sides. Australia II's design was to prove highly controversial, protested because some part of the design was done before and during the testing of the keel in a Dutch tank testing facility. Australia II was a revolutionary design approach with her winged keel and hull design featuring the shortest waterline length ever measured on a 12-metre. To yachtsmen accustomed to seeing racing yachts out of the water, Australia II is striking. Its conventional long slim topsides flare down to a short waterline hinting at the dramatic, minimal, slippery underwater hull shape which was fast to turn as well as easily driven and quick to accelerate. Ben often remarked that Australia II is a whole boat, not just a keel. The New York Yacht Club, holders of the Cup, formally protested both that Australia II was not a legal 12 metre boat, and that the design itself was not of Australian origin. The ruling arrived at on the boat confirmed that Australia II complied with both the 12-metre class and the America's Cup rules. The questions on her design origin were not formally answered at the time, but the controversy re-emerged in 2009 (see