Our biggest fear is a steep drive entrance, twice we have bent the skid plates. We are a lot more careful now.
We fill up then the fuel monitor says 100 miles to empty which is about when we need a break anyway. It gives you a lot of leeway when picking a station.
My first choice is a truck plaza. They usually have a lot of room to maneuver.
However, we always scope out the fuel pump approach and as mentioned if you are really really desperate, you can find a parking lot and drop the TT then go for gas.
Mostly it is a matter of just learning how to do it.
Good Luck