I have fished there 20 plus years and have only caught a few most of those were probably hybrid/mean mouth. Fish rocky banks with usual bass stuff(square bill, spinner bait, jig) and you may luck in to one. Lots of rocks close to the dam and several good rocky areas between IDB and Buck Creek in the East arm of the lake. If you want to target small mouth I would recommend you drive a little further North and hit Texoma.
See you on the lake and have a great day!