Mark, I have always been lucky when using 4 wheelers.I have never had to tow them.Had one at one end of the line and the use of another , at the other end. At times I have had to use the road to get a few miles further along,but on my northern line,you can get away with a 4 wheeler on a road.
Loading and unloading shouldn't take long, but disconnecting the trailer to get in somewhere might be a bit time consuming.
Sounds like a good problem to mull over.
Tom