Lee, I have a 5 acre lake also, it's almost 50 years old.(strip pit) I wish I had your "problem"! I still stock 300 b-gill each spring to boost the forage base. They are the backbone of your trophy bass lake. My lake is strictly c/r on bass and b-gill. Your biggest concerne is if you are bass heavy or not. If you are, leave it alone or maybe take some smaller bass out. If your not, you may want to think about putting some larger bass in to help the top end of the food chain. I must caution you though, don't get fish from a public lake or resevoir because you may be getting a sick fish, largemouth bass disease virus. This will kill almost all your bigger bass.If you have a buddy w/ a pond and he does'nt mind, get'em from there. Or if you can afford it, buy some. The larger bass will not only eat b-gill, but small bass as well, thus keeping your stunted bass in check. I did this last year and it has made a world of difference. Hope this helps.