Grew up in the mountains of WV so I know the trouble you speak of... and still do the majority of my successful hunting back home in WV. The issue is really that they tend to bunch up after the rut - so you either see zero deer, or 12. Whereas early on, you are seeing multiple small groups of deer or even singles. Once they bunch up, you are on them, or not. Food is key, but like you said it's sparse. Most acorns in the mountains are now of no value as they are rotten and not palatable to the deer (unless there is simply nothing else to eat). Back home, they begin hitting the fields again at night eating whatever greenery is available.
The deer are still there as sign will dictate, but it's definitely tougher hunting one large group of deer, as opposed to 5 smaller groups of deer. I've had success in December with a bow and with a muzzleloader in that region, but it's tough. Plus the deer have now been through all the rifle seasons and are wound pretty dang tight - no mistakes allowed when hunting them, that's for sure.