Hello peeps...
I live in Buford, Georgia and just had my DirecTV HD install last week.
I too am a little disappointed with local HD reception. Actually, I'm really disappointed. I just joined this site to do some research and bounce ideas off of anyone I can.
I have the DirecTV HD DVR with Triple LMB dish and for OTA a Winegard Sensar. I am still trying to find out if I have the Sensar 2200 (amplified) or just 1100 (non-amplified). My OTA line tests via the receiver show on the average 50-60 on all local HD channels (as they all come to me from the same general direction). I do manage to squeeze FOX5 in for a few minutes at a time, as for the other stations, I'm lucky to see at all.
1) Does anyone know what model the Winegard Sensar?
2) If it's the 1100 has anyone put an amp on this thing?
3) Anyone out in upper Gwinnett having these issues?
I'm not all questions...

I did get ahold of someone at Winegard regarding how exactly the antenna should point... there are some descrepences on the net on which directions the antenna should face... here is the definative answer from Winegard:
"Hello Matthew -- just think like this: "the jack is on the back". The jack being where the cable plugs into the antenna head. The "WINEGARD" name is the front of the antenna and should face the direction of your local channels' transmitters, and you can check the direction by visiting
http://www.antennaweb.org/ all you will need to provide to get this information is your zip code.
If you are getting HDTV with this antenna, I should also let you know that you may find your pictures may be better if the antenna is pointed slightly away from the line-of-sight, because there may be an interefering signal that is breaking up your digital picture which can be "tuned out" simply by turning the antenna, or even slightly raising or lowering the antenna."
This is from an email from Derek who is an Antenna Product Engineer from Winegard.
I plan on "tweaking" the antenna when I get home.