I had the same problem for years. This year is the first year I found the right combination (for me anyway). I bought a pair of Irish Setter boots with 1,200 grams of thinsulate and Gore-Tex lining. They are also about 2 sizes bigger then my shoe size. I wear a pair of wicking liner socks under a pair of regular everyday white socks. So far I've hunting from a stand in temps ranging from 20-50 degrees and haven't had a problem.

In the past I used to double up on socks, wear the real thick wool socks, boot socks, electric socks, etc. None of them ever worked for me because my feet just kept on sweating and then freezing when I stopped. Just remember this one thing "A tight boot is a light boot, but a loose boot is a warm boot". Give them feet room to breathe.

MassBowhunter
"Climb Higher, Look Lower, Fall Asleep Less"