I have about a 20ish acre area with the same type setup. Its a ridge area, 3 ridges all merge to a nice flat bottom with TONS of acorns everywhere. On one side of the ridges is clear cut across a road, on the other is a pond and houses. Its like he/they cross the road, skirt the outside ridges in a huge circle. I did however find quite a few scrapes popping up along that path yesterday.

I put up a camera and plan on checking it in a week or so. If you can I would do the same to see if they are starting somewhat of a pattern yet, not neccessarily checking those scrapes/rubs, but adding more along a "rub/scrape line." Good luck, I hope this tactic works out cause some of those rubs are dandys