A device to fix a floating boat to a dock or pier that will allow the boat to move up and down freely in the waves and yet prevent the boat from hitting the dock or pier or rub the piles supporting the dock or pier. The device is comprised of two elongated arms that are fixed to a cleat fixture on a boat wherein the elongated arms extend to the dock forming a triangle with a V bar or a T bar, a swivel and a pinion fixed to the dock or pier, thereby allowing the boat to move up and down within limits but not to strike or rub the dock, pier or piles.