Even thought if you have a Good Sam card an get 5 cents a gallon off at fly-J or Pilot I find that local gas station tend to be even cheaper.
I try to use gas station that have the pumps parallel to the building an not facing the building. I tend to pull into the newer station because there overhead is much, much taller than the old gas station of the past.
If I have to pull into a station that the pumps are facing the building I try to get to the end pumps away from the building thus have more room to swing out if needed...
I tend to start to looking for fuel stops when I get down just above to a 1/4 tank of fuel this have time to pick an choose where I stop.
Safe travels