Bill McGill has always followed his passions. He turned his back on a stint in the space program but then took a corporate position at Colgate-Palmolive, to take a chance on Florida dealership Gulfwind Marine. Later, McGill partnered with five fellow Sea Ray dealers to form MarineMax, today the world’s largest recreational boat retailer. At 72 years of age, he doesn’t seem to have any intention of slowing down. Proof? When I caught up with him, he was fresh off a weekend of not only barefooting but also slalom and trick skiing.