We towed our PT Cruiser on a dolly from Montana to Georgia and never had a problem with where to put the dolly. we stayed primarily in KOA Kampgrounds on the way down, and several different campgrounds on the way back.
The only time we encountered a problem was at a county campground one night on the way back where we had to accept a back-in site. I had to unload the car, disconnect the dolly, back in, put the dolly in front of the coach, then park the car in front of the dolly. then, of course, in the morning it was move the car and the dolly, pull the coach out onto the road, hook up and load up, and hit the road.
Every other campground we stayed at on the trip had enough room in the pull-through sites for the dolly. At our destination KOA I had to disconnect the dolly and put the tongue under the back of the coach.
A definite aid to handling the dolly is a two wheeled "trailer dolly" with a handle. It makes moving the dolly very easy, even for an old out-of-shape guy like me. There are various models available. I got mine from Harbor Freight.
It works great for moving our little flatbed ATV trailer, also.
As always, I recommend reading the Operating Instructions for your new dolly.
IMO, the DEMCO Kar Kaddy is the best dolly out there. It is not inexpensive, but it is a great machine, IMO.
Selling mine was one of the more incredibly stupid things I have done!
CM1, USN (RET)
2017 Jayco TT
Daily Driver: '14 Subaru Outback
1998 Dodge QC LWB, Cummins, 5 speed, 4X2
2 Kawasaki Brute Force 750 ATVs.
Pride Raptor 3 wheeled off-road capable mobility scooter
"When seconds count, help is only minutes away!"