Boot foot neoprene waders, either Hodgman, Lacrosse or Cabelas. The grams of thinsulate in the foot would depend on how cold it gets where you hunt, i.e. 1200 - 1600 grams for the midwest and northern states, 1000 gram (nothing less) for most of the rest of the country. In some areas you can get by with 600 grams, but usually more is better! I live in Northeast Texas, hunt here, Arkansas, Louisiana and Tennessee - my preference is MO Breakup Hodgman neoprene, 1200 grams of thinsulate!
Buckshot40