Shorty get out that seine and start sorting out GSH.
The big shiners like to hang out over deep water away from the bank, they aren't easy to seine.
I have good luck catching jumbo shiners with a cast net. I'm no Jose Wejebe, but if I toss a handful of Optimal before I toss the net, it will come up loaded with shiners every time. Normally I can get half a dozen tosses in before they spook and run off.
