The Chinook Easy-Uphaul attaches to your harness and lets you lean back and lift the sail. Raise your sail quickly and effortlessly, without your hands. Racers love it because they use big sails. Beginner and intermediate winderfers love it because they do not get tired from uphauling, therefore they can sail longer. Children and seniors love it because they do not need as much strength to lift the sail. When was the last time you smiled while uphauling?