I wish I had a good answer for you. On the big lakes in particular if I had a penny for all of the times I found mega-stacks of fish only to not get a whiff I would own both of those lakes. I have seriously considered buying one of those aqua-vu type cameras to maybe help determine what I am graphing but I haven't committed. I don't even know how effective it would be on Barkley with the water color. The only small shred of wisdom I can offer is if the fish are out in open water not relating to a drop or point even if they are bass they probably are not that catchable. I do also know the numbers of Asians are increasing dramatically in both lakes. I have seen some incredible schools on KY lake and many, many jumpers on Barkley. I am just thankful one hasn't landed in my bass boat yet but I can't say the same for the pontoon...
kc