Your water temps are cool yet, I'll bet they come around once it warms a little more. 40-50 Gills' in a 3/4 acre pond has them spread pretty thin, might be tough to locate them. Try fishing low and slow... tiny jigs tipped with a spike or waxworm, suspended below the smallest float you can still cast... I prefer a slip float for this type of fishing, just play with the depth and drift real slow. Change your bait often, so it stays lively.

"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.