All kidding aside, you would probably get some use out of it having CNG onboard. The installation with a 1" flue is easy. The lower you could get it, the better.

We had the propane fired Force 10 on our old 28'er. Once it was fired for a half hour or so, it would start to radiate pretty well. While it was marginal heat when it was quite cold, we still appreciated it. It's only a 1" hole in your cabin top.