Why not one of these: http://www.chaletrv.com/chaletrv/

I was looking at one a few years back (before the move to the caribbean), and was going to get it with the off road package to use in the deep woods of New Brunswick, Canada for hunting (my excuse for a vacation and no cell phone).

I looked at one in person, and was quite well built. And you don't have to worry about ripping the canvus like the other popups. At the time, I was looking at getting solar panels installed on it and install some batteries.

Just an idea.

Kris