Hey modders! I wanted to share my project which worked nicely.
I added a TV mount to my Jayco on the interior wall which separates the bunks from the entryway. This is a hard wall to mount too, as it's all hollow.
So with some ideas elsewhere on this board, I went with the trophy board method. I got this pre-routed pine board from Hobby Lobby, unstained. The thinking is this: rather than bold a TV mount right to that wall (the mount screw hole pattern is only in one vertical axis), distribute that lateral load by mounting a board to the wall, and then the mount to the board.
The hardware for the board to the wall are 1" sex bolts (yes, that's what they're called, stop giggling), large pan heads.
All said and done, it's very solid! Ideally, I'd love to not have to take the TV down and re-attach each time, but I'm sure the driving vibration will be horrible. Perhaps some long velcro strips to strap it to the wall while driving?