I have seen guys have success with using a thin piece (maybe .25") bolted to an aluminum skid. The plastic slides well over rocks which is the only down side of aluminum. So this combo gives you a strong, light weight, and corrosion free skid plate that will still slide over the rocks. I have been thinking of getting one of ASFIR's skids and bolting some plastic under it then wheeling with the intent to punish the combo to truly test it out. Not sure when I will get the chance to do this though so don't wait for me. I can't afford it at this time.