TV mount in cabinent

We have a 2005 Everest fifth wheel with the old style square tv inside a cabinent. I would like to replace the old tv with a new flat screen. As you know the new TVs are wider than they are tall. So what I would like to do is mount one on some kind of device that allows it be outside the cabinent when in use but rotate at an angle and slide or be movable fully inside the cabinent when traveling. Note the living area slide-out only clears the cabinent front by about 2 inches so the tv hast to be moved inside the cabinent when traveling. I’m looking for ideas for mounting. The wall panels are very thin and I am concerned about them being able to support weight of a normal tv mount bracket. Also, the shower is located directly to to back of the tv compartment.