I got a pair of these low profile rollers for our last MH. It drug so bad that the square ring that re-enforces the hitch had worn very badly. I had a welder/fabricator friend weld a new ring on when we started towing our car. I transferred them over to the new ws31, but it very seldom drags.
https://www.etrailer.com/Skid-Wheels...48-979018.html