A couple of years ago when camping over labor day weekend, a class C came in, backed in their site all crooked and jumped out and setup. I was talking with them and they were traveling the country in a rented RV, they had the setup down to the minute, crooked in site was to get it level without any blocks or jacks. He said only condition was the back pointing generally south so the satellite dish worked.. They were in one day, gone the next, onward (it was just an overnighter, not one of the sites they were seeing).. They had put something like 22,000 miles on the RV over the summer all over the lower 48.