I myself have never hunted behind a high fence. IMHO The only way a high fence operation could be considered a fair hunt? Would be if it were large enough? If you put a guy inside a high fenced ranch of 10,000-acres armed with only a bow. Allow only foot traffic on this ranch. No trucks, atv's or bikes of any kind. Have him hunt the same animals that get hunted every week by average joe hunter? Then I think you would have a "fair hunt".
I have nothing against large high fenced operations. The small operations that have "canned hunts" get under my skin.

Would I ever hunt behind a high fence? Even if I won the lottery I doubt that I would? I can not afford it at this time in my life. If I could afford it? I would rather put that money towards a caribou or moose hunt.

Just my two cents,

WK