we just bought our first motorhome, its a class a winnebago, i want to hang a picture on the wall and am not sure if i should use a regular nail or if there is something special i should use.
We just hung a picture yesterday using the Command velcro hooks. They come off of the wall cleanly when you no longer want them there and by using velcro instead of wire, you don't have a hole in the wall or the picture rubbing back and forth. Use their coat hooks also.
You do not want to make any holes on the walls of a coach. What the wife uses is some stuff that looks like a putty and as long as the temperature is cool they will hang in real good, but if you leave the coach in storage and the temperature gets hot, the putty will soften and the picture will not stick to the wall. But it has worked for us.
There are several types of removable strips that will not hurt your walls when and if you need to take them down. Walmart/Target or any store like that will have them near the picture frames. We've used them at home and on the camper with good results.
I have used a residential picture hanger with the little hook and then used double sided tape on the bottom of the picture to prevent it sifting and moving. Have had a 2X2 in our bathroom with this method for 3 years now and it is still secure.