I looked at your profile picture. I wouldn't have guessed it's a toy hauler. That's a pretty cool one-man office. You train or teach out of it on the road?
A little but mostly it stays out at my shooting range unless we're camping. In the winter if it's cold I can do private classes in the front and not heat the whole thing or if there are up to 7 or 8 people for a CCW/ Pistol class and I need to do some lecture I can set up chairs in the separate garage. I don't do much inside anyway. Most of the training is done outside on the range.
More pics of the TH and range here
http://www.fixedsighttraining.com/Photo--Video-Gallery.html