I usually drive such that the gas is always on, so that I can turn on the fridge at a push of a button, or even the hot water heater, which has the optional on switch at the control panel. Also the central heater and the generator can be turned on while driving, since they are propane.
I read somewhere that if one turns the main gas off, it's a bear to bleed the lines and relight things.
The pipes will be horizontal to each other, and a heat shield sounds like a good idea. I wonder how much they'll take me for that. I think they may throw it in if i ask nice. After all, they seem to be really enjoying working on this rig. They act as if it's theirs. They even told me that if I get a property with land to park it, I may never stop tinkering with her. I wonder what they mean?