I fish Kentucky lake alot more than Barkley, but I might be able to point you in the right direction. Seeing as how you don't have time to go out and find some ledges before this weekend, I'd advise that you try and catch the fish on their fall pattern (which, from reading some fishing reports has in fact started). Fish the heck out of the main lake and secondary points. Shallow, mid (my favorite) and deep diving crankbaits in pearch color (or any color you have confidence in). Also try a black and blue jig, chatterbait and spinnerbait. And, as always on that lake, have a carolina rig ready. Basically, I'd just hop from one point to another until I found the fish.