Abstract: A device that attaches to the center of a boat slip so a boat entering the slip will engage the device. The device consist of a central vertical member having a horizontal support bar on one end so that the horizontal support bar is approximately centered with respect to the vertical member and is approximately perpendicular thereto. Each end of the horizontal support bar is provided with a forwardly inclined leg that engages the rear end of an approaching boat as the boat backs into the boat slip. Each leg is capable of flexing slightly rearward when engaged by the boat to slow and stop the boat, preventing damage to both the boat and the dock. An alternate embodiment eliminates the vertical member.