Would depend on their nutrient availability and winter kill for me to decide if I would help feed. In nothern Michigan I did put out feed to help them through the winter. In PA my buddy puts out a few bales in late Jan-Feb. I can't see feeding in warm Southern states or even Tenn, KY ect ect. Late season food plots are probably more cost effective if the snow isn't too deep for the deer to paw down to. To each their own on this one, if you have the money to feed constantly heck I'd do it too!