Does anyone have any recommendations for skid pads / wheels for the rear of an all aluminum enclosed trailer? I was thinking about just fabricating up a set of aluminum or plastic "pads" that would go under the rear corners of the trailer to protect it. Then just replace those as needed if they wear out. Or am I better off finding a very small set of wheels that bolt on? Trailer is a 7x25 and this is the first trailer that I have ever needed pads for some I'm not sure what's the best option to go with.