Where the Crappie have you been :p
I'd say that it would depend on where on Ky Lake that you intended to fish. But, overall it's pretty much a crapshoot, since the weather dictates what the fish will be doing, wherever they are. I always opted to start my week on the 3rd weekend of April, back when I used to go there ... but, I was mainly fishing the dam ends of either lake, and concentrating on shallow wood & buck brush for White Crappie. With the increase in population % density of Black Crappie, it might not matter which weekend you choose, as the spawns of both species can run back to back or concurrent ... given proper water temps, weather, and water levels.
Hopefully, some of the more recently experienced members will offer their thoughts, as well.
... luck2ya ... cp