A friend of mine that hunts Green Ridge has seen them from time to time. If you trust handheld GPS units with trees (leaves are off so they're not too bad now) or are comfortable with a compass, I would suggest that. PLENTY of room to go to spread out you're calling routines and now that deer season is pretty much over, running into other hunters after the first 1/2 mile probably won't be a problem. I know he has hunted the 15 Mile Creek area and I'm not sure where else, but the coyotes are there. Even the best areas sightings are rare and shots rarer.
Good luck !!!!!!!!