If limited recruitment for both species is the goal then I like the idea. I'm not very familiar with yoy YP...would they inhabit the same areas as yoy HBG? If so, then I can see where issues with unwanted HBG recruitment might occur also, if conditions are manipulated to favor YP recruitment. I'm very curious about this combination and would like to know more about the strategy employed.

"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.