I have only done a couple. The best advice is cheaper carpet. The higher priced the carpet is, the better (and thicker) the backing. The best advice is, go to a carpet center and try to bend the carpet. The easier it is to bend, the easier it is to work with.
1998 Pace Arrow 35 ft. F53 Ford V10 2014 Honda CRV toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.