Chaunc, ever have luck right under the causeway? I could tuck in near the the bridge pillars and, if I remember, the depth under the bridge is 15-19'. I only have a kayak so close areas will help put tremendously instead of starting up at the causeway launch then going the whole way down to the south launch, dodging boats.
I refuse to block boat traffic by tying up under the bridge. I've found those depths in the north and south channels outside the bridge. Contact Ezbite about best areas to kayak fish. He does very good from his.