Any reason for reservations about driving a lot of gravel road with an underslung propane tank?
Would probably depend on how securely it is installed, and the condtion of the road. If you’re bottoming out, I would call it very sketchy.
Washboard roads also play havoc with fluid/propane connections, so it’s always wise to double check them, just for peace of mind if nothing else.
Simple is cheaper and more reliable." ~ Off Grid