I do not know the lake at all but I will respond with what is working in my area lakes. The hill land lakes in Middle Tn. are producing crappie in areas where the channel closes with the bank and you can find laydowns sticking in the water. The crappie are on the deep end of the laydowns. Kentucky lake is far different because the channel is nowhere near the bank. Spider rigging may be your best bet unless you want to spring for a local guide. My guess is anywhere you can find laydowns in water of any depth may get you bit.
sorry I'm not much help but no one from the area responded.