The middle section of Lake George is a popular area for sailors who tack around Dome Island, an uninhabited forest that looks almost tropical. Or head farther north into a passageway, known as the Narrows, that is dotted with islands. Try your hand at the tiller on a leisurely two-hour cruise or take sailing lessons at the upscale resort The Sagamore. It uses Colgate 26s, sturdy rigs with a cockpit so spacious an instructor has room to maneuver around his students. Cost is $100 per hour (minimum two hours), including an instructor. a complete three-day course is $995. Rooms at The Sagamore range from $239 to $589 per night. 518-743-6104.