Intent has nothing to do with it.
If you are hunting a man made barrier that modifies the animals behaviour, you are no better than a guy sitting by a fence that contains 10k acres. You are still taking advantage of what was put there by man.
Neither of these are intended to drive the deer in one way or another, just a barrier. One keeps deer in and one keeps deer out.

"Not many options when they are blocked in on all 4 sides by fencing. "
I don't disagree with you If we are talking about 40, 50, 100 even 200 acres. But when it starts getting into the thousands, you aren't really "blocking" much of anything. Does typically stay within about a 200 acre area, bucks might stay within a square mile or so. Many of the animals on a 8k plot would never even see the fence. You are talking about square miles or roaming. These animals aren't "captive" in the sense that you walk around and they just can't get away from you. The population density isn't much different on these properties. Just animal quality. It would take you the better part of two, maybe even three days to walk our (high fenceLESS) property.



Hank