Couple things to try.
In my neck of the woods Ranchers are making the big round bales of hay. If you can get permission to hunt the property the bales are plenty big to hide an ATV allowing you to move a minimal distance and call from the other side of the bale. Same goes for locations where bales are stored in the field (much of the year). These areas can be very fertile hunting for predators due to the numbers of mice, voles and rabbits that often feed on this same hay.
A side benefit on properties being actively farmed is critters get used to seeing, hearing and smelling farm equipment, fuel and people so those factors are not the deal breaker common to more "pristine" environments.
Same can be said for old abandoned homesteds, barns / sheds / corrals. These can be great locations for predators to hunt and for you to hide your ATV and call from. If you can find a few such places consider doing a little baiting to help bring fox and coyotes into the areas.
Time spent visiting farmers / ranchers and obtaining permission to hunt plus
public land scouting could get you into some good hunting without the need build a blind for your ATV.
Good luck on developing your own approach to varmit hunting.
Silvertp