Our friends 33 ft gas rig is taller than our 38 ft dp so they go in first.
Also notes many state parks have plenty of room past the pad so backing in often fits large rigs but trees and "was trees" with rocks coukd be issue.
Was tree is something that once was a tree and now rests on ground.
You may be able to back in but check as dp drops before rising to level and squatting on a stump may not be a good day.
Tony & Lori
1989 Country Coach Savannah SE