New to all this..

Do not consider mounting anything to the 4 outside walls, ceiling, floor, or any wall shared with the shower. You may be able to use a square of plywood as a backing to one of the flimsy inside walls.

I believe it has an aluminum body to be lighter weight. I have a stud finder and if this was a house wall i would be perfectly ok having framed and finished homes. I just dont want to start drilling holes and not knowing what behind there haha from all the searching ive done that kinda seems to be the way things go. Would pictures help? I could take some after work

Do the interior walls have wood or metal framing. If wood you might look close and find vertical rows of thin gage staples where the paneling is stapled to the studs. An electronic stud finder is also useful. It senses the difference density of the wall with a row of LEDs lighting up to indicate the studs under the paneling. The walls feel soft becuse they are only made using 1 inch thick studs and thin paneling on each side with no filler material between the studs. Depending on the wall location and support needed the studs vary in width.

I used an electronic stud finder and spotting the staples to locate the wood studs. The stud finder also allowed me to determine the width of the wall studs. It also helped me to determine there was a piece of plywood between studs where the 2 tv shelves were located that the shelf brackets were attached to.

I lowered the shelf on the wall between the dinette and bunk house about 2 to 3 inches allowing me to place a DVD player and satellite receiver on the shelf and still be able to open the cabinet door next to the shelf. I found the edge of the wall had a 1x3 and allowed me to drill through it and mount a narrow based articulating mount using 2 bolts, 2 fender washers and 2 lock nuts. The normal position for the 21 inch flat panel tv was against the wall above the DVD player and satellite receiver. I can swing the tv around the end of the wall to face the bunkhouse and also have full access to the cabinet.

I used an identical tv mount, bolts fender washers and nuts for another 21 inch and later a 29 inch flat panel in the bedroom. I drilled through a 2-1/2 inch wide stud I located in the wall and mounted it with the fender washers and lock nuts on the living room side of the wall. I repurposed the bedroom tv shelf since it was too low and in a corner blocking me from scooting around the bed to use as a counter extension in the galley. The formica top was an exact match for the kitchen counter.

Welcome to the forum!

It is imperative that you mount to the studs in the wall. No fastener will hold a TV to the thin panel board on the walls.

I have a TV on the bedroom wall in our TT. I didn't mount it, it was there when we bought it.

They utilized a stout piece of plywood, 3/4" I think, which is securely screwed to the wall studs in multiple places, bridging 2 studs. The TV mounting frame is very securely mounted to the plywood, using lots of screws.

The TV is a flat screen, doesnt weigh a huge amount, but has to be solid anyways to withstand all the bouncing going down the road.