I was there in April. Caught lots of nice smallmouth with my biggest on a 5" fluke with a nail weight in the nose. At one point I found a live crawfish and it was fire engine red. So I tied on a jig that had some red in the skirt with a craw trailer and did really well with that. The three things I threw the most were ... Jig/craw trailer, green pumpkin Yum Christie Craw, Yum fluke.
My biggest bit of advice is to cast upstream. Those fish will face upstream into the current and eat what comes down to them. I caught several fish just by setting my rod in the holder and letting the line out as I drifted downstream in the current.