Yes, the fencing is vinyl covered welded wire. 1" x 2" mesh
This is the best tool for previewing a location;
http://www.fcc.gov/mb/engineering/maps/
and tvfool.com using "callsign lookup" is good for targeting a specific channel
The best resources I found are germane to this type of antenna.
http://www.antennahacks.com/
http://www.hdtvprimer.com
A yagi is also good, but more useful in open-flat areas like the UK. BTW, the yagi works better at my location due to flatness and lack of multipath.
I found this site very helpful when selecting a yagi
http://www.aerialsandtv.com/atvschoi...ials.html#XB16