Be careful with the "starboard". Really, this is just a big sheet of either Delrin or UHMW. The reason the rock buggies are using it is not for structural support.....they are using it because it allows them to slide over the rocks easier than steel will. This material has great impact resistance, but only moderate load bearing properties. It typically used as bearing material/wear strips for plastic conveyor beds, sliding plastic doors on manufacturing equipment, etc. (basically anywhere that you have a piece of plastic sliding over something abrasive, you can put the delrin in to act as a bearing) You will never find this as a structural materail for anything except possibly the lightest of equipment. It simply will not hold much weight unless it is backed up by something stronger (steel, etc).