What kind of forage are in this lake? Crawdads, shad, minnows, bluegills? Have you tried live bluegill. I fish alot of ponds by my house, and I've found that live bluegill work very well. Don't know exactly how legal this technique is, so I would suggest finding out before you go and do it. Have you tried anything smaller than finesse worms? Baby Bombers, tiny jerkbaits, Panther Martins, or have you considered flies? I've seen alot of big bass come up and eat mosquitoes and bees and such. Some things to keep in mind. Tight Lines!