Another PFJ fan here. The copilot uses the PFJ smartphone app and tries to find one that has RV lanes. Those are sweet.
Otherwise, pumps parallel to the road are a second favorite. But like a PP said, not very many of those. So we stick to the outside lanes and take our time if it is a standard setup. And if a station looks too tight we just pass it up and keep going. Better to top off when you see one with good access than to wait until you're running on fumes and get desperate. We don't go under a quarter tank anyway for the generator (just in case we would need it at any given time.)
Practice will help you get a feel for how wide your swing is and to feel confident about making people wait a little bit for you - you're giving the station a bunch of money after all ;)
When we bought the C we viewed a series of training videos put out by Lazy Days. That helped me a lot in understanding turns and distance judging.
