I use a ATV almost daily. But with no real modifications. I have a small trailer i can put a welder on to get where the truck can't.
Usually if I need to roll out bw where the truck can't go I leave it on the roller on the truck. Tie it to the ball on the ATV and pull it out that way.
We've never used a quad, but use a side by side on most jobs. The HT Jenny I just built has a hitch mount, and we have a hitch mount barb unroller as well. I'm building a trailer style net wire unroller for a local contractor, and he plans on using it with his quad. Lots of em on the fence forum use quads that are set up.