I use to go heavy on the boots and the all wool sox as many of the other hunters have noted but i found that I sweated too much and then my feet froze every time. last yr and this yr I did some things different. After the morning shower make sure the feet are dry then spray them with unscented all natural mineral salts antipresperant, allow that to dry infront of a heater or something. Then put on a thin nylon/polyester/spandex type sox that wick away any possible sweat from the surface of the skin. Next a med. thick wool poly blend sock to insulate and pull the moisture away from the foot. I bought a $30 pair of boots at Wal-mart that were a hardenedwater proof nylon shell w/ 400 grms of thinsulate and thick foam type soles , not hard vibrem type that transfers the cold to your feet. I carry an extra pair ofsox with me if i should need them. And finnalyI carry a dbl thick butt pad to put my feet on instead of the cold metal foot platform of the tree stand.Many of my hunting days thisyr were16 degs. or colder and i didnt have anycold feet problemsat all this yr.
About the boot blankets I found I dont need any thing like them now.