I have been on or tagged along on 4 Oryx hunts. I have been in Rhodes twice, and I think it is the best area. They have hammered them a little, but there are still a lot out there. Honestly, the best way to hunt them is just drive or get up high and glass some.
Depending on the time the "big meeting" lets out, you might hang back. A lot of hunters act like it is the INDY 500 and start drving. They drive past a lot of ORYX.
There was a hunt this last weekend. I had a couple of buddies go on it, and I have not heard anything yet.
Take pics!