When I thought of a wavering Virginia fence, the first thought I had was of this brick wall, designed by Thomas Jefferson at the University of Virginia.
http://www.columbia.edu/cu/gsapp/BT/EEI/MASONRY/18serpcorn.jpg
The wall is "serpentine" to provide rigidity, since it is only one brick thick (good band name: One Brick Thick), but now that I am reminded of the post-less wooden fences Dr. Bill mentioned, I wonder if Jeffy didn't have them at least partially in mind for what he called his "academical village".