What size of trout are you catching there and what size do you consider "Bigger trout"?

I also wonder what kind of trout population is in the waterbody and what kind of overwintering of fish happens there.

Many trout stocked "lakes and ponds" are "put and take". That is, if you catch a trout, you may as well take it home and eat it as it will not likely survive the winter so will not grow up to be a bigger fish. And so there may not be any bigger fish in the lake.

I am not a big fan of catch and release ice fishing. Catch and release is always a little stressful on the fish and there is normally some mortality. I have no evidence but I would think the stress of being pulled from an ice-water hole into the cold winter air and perhaps allowed to lay in ice and snow while being unhooked, would be extra hard on a fishes health.

Robin in Rocky