It's simply the easiest, best way to learn to waterstart. By floating the clew, it allows you to simply hold onto the mast, and the wind automatically positions the board and rig in the perfect waterstart position. When the mast is lifted, since the clew can not sink, the wind blows under the sail and lifts the sail above the water, effortlessly. Since every waterstart is the same and every waterstart is effortless, you learn quickly.