H.S. Pro Staff:
I am sure that a doe decoy can help in late season. I think there are many variables though. First and foremost, the best thing to rely on is the predominant food source. Deer are hungry through the winter months, especially after the rut.
On the other hand, a decoy can relate many things to the deer. It can relay safety to other deer, especially if there has been a lot of pressure and it can relay a good food source and create a visual lure to deer that are out of range.