Neighbors Dad learning the hard way

I've personally seen the results of two separate rv accidents. Interesting thing, in both cases, the driver had a spotter that was saying all ok, keep coming. One was not having shop door high enough to pull trailer out. Grandpa asks granddaughter to watch the side of the trailer, which she did very well. She had no idea that he did not open the door all the way when he backed his truck into shop to retrieve trailer. Bowed the bottom section of door out, had to be replaced. Second was small motorhome backing up next to power pole. Younger brother was driving, older brother spotting. Come on back, ya, keep coming, then crunch as a tree branch (4" diameter or so) punched a hole on back corner of MH. He pulled forward and never said a word. Older brother was, hey why did you back into that tree?

Point being, not all problems are the drivers fault, some have helpers.