I find it easier to use the truck lanes. They are dirtier but so much easier to maneuver into and out of. A drawback is that you often have to go inside and drop your credit card, then return to sign it. When finished pumping, don't forget to pull ahead so the professional driver behind you can get in and start pumping.
I'm ticked at Flying Js, at leaset the two I encountered in Wyoming. They installed a driveway and pumps just for RVs. So you pull in with your roughly 60 feet of stuff and find a sharp turn that forces you to climb the curb as you exit. Up Theirs! Really stupid move. Plus, one of them exits you right back into the gas station area, and that's crowded and hard to exit.
'11 Eagle 320RLDS
'02 F350 PSD Dually 4WD
DW's Ride, '13 Expedition