I asked a couple of the bass fishermen about the red ear sunfish. They said they normally hold off the first drop off from the bank.
I agree with this.....sorta
I was there a couple of weeks ago and caught all my fish on the first drop. I was using my old faithful 2" triple tail. Bluegill weren't hitting, but bass were. The bank is deceptively seductive in my opinion. Really good looking stuff, but too shallow. Hits came on the first drop. Wind is your friend.
I was actually targeting bluegill. Had my favorite bluegill bait on my favorite ultra lite rig and kept having to put up with these
Saw a couple of birds snag some bluegill in the trees, but it was too windy to fight the boat in there.
The dam was the same way. Nothing on it or close, but a bunch a few yards off in like 18'.
I would certainly suggest casting real shallow into the reeds (you never know), buy try and be a ways off the bank and don't give up early on the retrieve.
I love staying at Oak Thicket.