I think a lot depends upon what level of interaction with your pond, regarding management, that you are willing to undertake. GSF are hardy, superb fighters on light tackle, make decent table fare, and are usually willing to cooperate, catch wise. In some instances they may tend to overpopulate and become stunted, but here again that has a lot to do with the management strategy in place.

Can you post a few pics of what you're catching?

"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.