Funny that you brought that up, because I just mentioned this in another thread here about my upcoming project.
I have no room for a full-sized permanent layout, so I’m looking up (literally) to the idea of a wall mounted single main-line just a few feet below the ceiling & around the perimeter of my 12x16 living room. The front door, and all the windows are at the same height at the top edges, so the layout will be mounted at the top edges of them.
I plan to use 3/4 inch ply-wood for mounting the track, and to wall-mount it, I’m gonna get some pre-milled wooden 1/2 inch baseboard material, and scew thru the back of the vertical baseboarding, and into the back edge of the 3/4 plywood. I can then mount the whole thing to the wall, by screwing thru the front face of the baseboard and into the wall, wherever the studs are. This should make it look as though it were part of the house, and should look much better than if I were to use some sort of brackets for mounting purposes.
In each corner of the room, I’ll leave extra real estate so that I can mount a few of my operating accesories & buildings.
To make it all look pretty, I’ll paint the wood the same color as the wood trim around all my doors & windows, and to please my wife, I’m gonna get some blue rope-lighting and tuck it all the way around into the back edge of the plywood, behind the RR-tracks.
You won’t physically see the rope-lights, but when turned on, they will cast a blue glow accross the entire ceiling.
I plan on running a MTH Wabash 4-6-4 Hudson with Proto-sounds, pulling 2 sets of 6 lighted passenger cars, for a total consist of 12 cars.
The length of this train will probably be about the length of one of the long walls in the room, so no matter where the train may be, you’ll be able to see part of it at all times, no matter where you sit in the room.