It sounded like a good idea ... Offer passengers elite classes in diet, health, and exercise. Persuade world-renowned experts to teach the seminars. Book them on the Pegasus-a luxurious cruise ship sailing from Florida to Alaska. That was the thought of Collin Woodward, the Vice president of Flagship Cruise Line, when he invited on board: Clifford Freeman, the mesmerizing hypnotherapist; Kenna Chavasse, the seductive light-food chef; Jean Claude Regale,...