Anything over 30' is going to be tight and limited to some sites especially at older campgrounds. When making reservations or calling ahead besure and know the actual length of your unit, measured, not the length in the name of the camper, they are often different.
2003 GMC 3500 crew dually. Transfer Flow 50g aux tank; ISSPRO gauges, PPE boost valve, air box mods, stock exhaust w/o muffler, Line-X, Pace Edwards bed locker power tonneau. B&W Companion. Pulls a '05 Wildcat 31QBH 5th wheel