Take a post hole digger out in the field (in a location that can be covered within 100 yards with a rifle) and dig a hole about 2 feet deep. Use a 50 lb. bag of grain/corn to fill the hole, then pour 4 beers (cheapest you can find) on the corn. Pour the last of the corn on top of the hole and pour the last 2 cans of beer all over that pile of corn. Keep checking that pile of corn each night. Sooner or later they'll find it and eat it all, so much so, it'll look like a missile hit that spot.
If you can spot light them from 100 yards away, they can be shot at night. Night Vision and/or Thermal scopes are better than spot lights. I have a Night Vision scope and might be able to make the trip, if needed. I know a couple of brothers in Jackson, Ohio that would be closer and they use Thermal scopes.
I learned of this method from some guys in Vinton county, north of Londondeery. It works!