With my experience this winter, if you run an aerator during the winter, you can feed the trout in the same hole all winter long. I had an aerator set at 4' depth (suspended) in 10' of water in front of the feeder. The feeder was set to go off once/day and the trout ate every day. From late October until now they've put on from 2"-4" and some have gained over 1/2#. I stocked 10"-12" fish, IIRC they were right around 1# when stocked. I caught one Wed night that was 15" and 1.6#.