I’d like to find a source in London area for reasonably priced UHMW for my HLA snow pusher, thinking of using for back drag also. I can drill and cut myself.
Talk to 'dump truck' service places. often used as a box liner ! I got a 'scrap' and have a 4by4 foot piece left. I put 2x7 inch pieces under the MTD snowblower skids I put on my snow pusher. So far just rain here in Hamilton,haven't had to try them out.
My only suggestion with UHMW is to go thicker than you think you need. I had a half inch (12.7mm) thick edge on my plow blade and the corners curled back after only a few uses.