When I fished the Catawba chain years back at this time of year I caught them on brush piles in 20-30 water on channel edges. They would be 15-18 feet deep over the brush just as the sun came up, then work their way down to the brush as it got lighter.
Where your fishing you should be catching something.
You could take your kayak up into the river section with a tube of crickets and have fun with the bream. Very small crank baits and spinners work good too.
Give a man a fish, feed him for a day.
Teach a man to fish, he'll sit in a boat and drink beer all day.