In all my years of deer hunting (only about 8) we have put8-12 guys in the woods 1st week, 2-4 guys 2nd week, and only 2 bears have been seen (one harvested) in a high population area.
I have walked up on a bunch of deer, but the onlybear I have ever seen while hunting was swimming a river.
Bears roam, you can't realisticly set your tree stand over a "bear trail", and they are cautious, the only reason our dogger was able to shoot one while moving is because it was so windy that day that it was loud and the bear couldn't smell him, they met at the peak of a bald rock.