The revolutionary SkyWinch makes launching and retrieving your trailered boat easier. Simply leave a bow-line attached to your boat and walk it to your trailer. Place the rope into the SkyWinch and start cranking. The patented SkyWinch grips the rope and pulls boats under 18'L with ease. The crank arm does not spin backwards until you release it with the trigger for controlled payout. For best results use high quality 1/2" double-braid nylon line with capacity exceeding boat weight.