I just wish there was some convention at these gas stations that could point you to the diesel pump, something like a green light or cone on top of the pump so you could see it from the road.
I rarely use truck stops, no need, but I dislike driving up to a station slower than I would like to get the lay of the land so to speak before pulling in.
What I have learned is to avoid stations that have their pumps perpendicular to the road, pumps that are parallel or at some angle to the main road are usually easier to navigate with a fifth wheel.
Ron W.