Just about impossible . . .
for the modern computer game user to stay in a tree stand for two hours straight.
Heck, there's probably some out there who could sue for cruel and unusual punishment for even getting in a treestand for an hour.
Actually, I had to train my mind. One tactic when young was to just stay and read a condensed paperback version of the entire Civil War. I didn't see any deer those two days, but I sure got patience and learned a lot more about the Civil War. We sure had small deer herds in those years.