Several local ponds here had winter kill last winter. My favorite little 1/2 acre public honey hole was 100% killed. Dead magnum gills, channel cats, bass, littered the edges. Our pond 1 mile away had 0 killl during this period. The lack of vegetation decomp surely helps with this. I read about HSB but I think they'd be a one year and done thing here, there is ice on this pond from November to March.

I am not feeding anything yet. I may be able to hide an aerator in the corner closest to my house if the need arises
Definitely won't be able to do the center/anything obvious. Hoa ownership of part of it makes things complicated.

I do own a couple cast nets, and need to practice before my next saltwater fishing trip.