It might surprise you how tight a space you can actually swing a Class A with toad... Very few gas stations I haven't been able to use when towing - though sometimes I do wait for the pump I want to use (most often an outer one...)
I do stay several feet out from the pump - which then allows me to turn either way on the way out...
Try in an empty parking lot using the lines for reference.
Not yet retired...
Florida (Michigan transplant)
2014 Hurricane 32A
2000 Infinity (previous)