Fair chase as defined on the Pope & Young website:

The term "Fair Chase" shall not include the taking of animals under the following conditions:

1)Helpless in a trap, deep snow or water, or on ice.
2)From any power vehicle or power boat.
3)By "jacklighting" or shining at night.
4)By the use of any tranquilizers or poisons.
5)While inside escape-proof fenced enclosures.
6)By the use of any power vehicles or power boats for herding or driving animals, including use of aircraft to land alongside or to communicate with or direct a hunter on the ground.
7)By the use of electronic devices for attracting, locating, or pursuing game or guiding the hunter to such game, or by the use of a bow or arrow to which any electronic device is attached.
8)Any other condition considered by the Board of Directors as unacceptable.

So the only real question is in #8. Since the provisions (as I observe them) spell out in #5 "while in an escape proof fenced enclosure" I interpret it as an enclosure that is not ecsape proof would be ok. A segment of fence certainly dosen't fit the "escape proof enclosure defination".