railing for steps inside 5th wheel

I wonder if a piece of matching decorative 1/4 or 1/2 x 5" wood could be glued to the wall with "no more nails" or similar adhesive. Once its firmly in place a decent railing could be bolted to that as well as one or two screws through the wood and penetrating the wall 1/4"

I have used this technique a few times to bolt to areas like cupboards that were just thin Luan. Spread the stress over a large enough area and I think that it would be safe enough.

Daryll