Olympic helmsman Glyn Charles explains what it takes to win races aboard these small yachts. The keelboard -- a small yacht of Spartan accommodations used exclusively for racing -- and the sportsboat -- a new, lighter breed of keelboat -- provide a high thrill-to-cost ratio, which has led to a recent explosion in their popularity. Included is practical advice for accelerating, tacking, sailing fast to windward and downwind, riding waves, and understanding the boat's rigging. Dozens of photo sequences help explain various methods for hoisting, gybing, and dropping the kite.