When its really cold I use those insulated boot wraps they sell. Oh and I take an Advil. Seriously! I don't know why exactly but I don't get uncomfortable when I take one. I think it thins your blood a little, plus it gets rid of the pain and sting you feel when your cold. Been doing it for years and I'm the last one in our group to get down every day.

Thanks for sharing you tip. I'm willing to try it to get comfortable when hunting in December. I don't mind the cold but it gets damn cold here in the late season. I think it is the inactivity that really takes it toll.