Well, DD1, maybe now is the time to introduce some of our beloved, tough guy GSF to your big pond instead of those pansy BG.
I fished my little pond today for the first time this year. Water temp on the sunny side was 46 degrees, right at the shoreline. I landed 6 BG; the largest was 9.5". I caught 1 tiger trout of 16". Then I landed a scrappy 8.5" GSF. It out fought all those other fish, fins down, and glared at me while I unhooked and released him.
If you've ever fished in the salt water, say Baja California Sea of Cortez, and handled a finescale trigger fish, you know what that glare means! "Get you finger a little closer to my jaws, you rotten fisherman, and I'll show you what pain is!"