I have been thinking about running my Texas hunter in the winter where my spring flows into the pond. It remains open year round and with an aerator in 2-3' of water I could keep a large area open for pellets. How deep are you feeding right now? I am hesitant because it will be hard to see if the fish are taking the pellets or not and could easily over feed.
For what it is worth, I have a trout pond and I regularly catch rainbows early and late ice on fathead minnows in the deeper parts of the pond (10-12'). They always seem to move shallower in the middle of winter. I also have been catching most of my brook trout on golden shiners the last few weeks. All of my fish get released for now.