way to assist with moving heavy sections of pipe along and out of such trough. [0004] A variety of pipe cars, skates, bumpers, conveyors, stops and other devices (e.g. U.S. Pat. No. 4,371,302) have been described to control the motion of sections of pipe between a rig and ground. [0005] For example, the applicant's Canadian application CA 2224638 relies on a spring loaded bumper mounted on the pr