I'm a solo RVer. I drive a 'C' and pull a Jeep Wrangler Toad. I certainly seek out pull thru sites simply because you can't back a toad up more than a couple of feet before the front wheels lock all the way left or right. If I have to take a back in, I can unhook the Jeep, move it out of the way, back the 'C' into the spot and park the Jeep in front of it. Same problem in gas stations. I have to be careful to find a station with the pump islands parallel to the building instead of perpendicular, so I can 'pull through'.
If I had a TT or 5er, I'd have to depend on a Maunback to guide me into a back in spot at a CG.
In case you don't know, a Maunback is somebody that stands behind your TT (out of sight) and yells Maunback until you hear something crunch. :)