I've suffered for years with cold feet in the stand. I live and hunt in Northern MN. It doesn't get much colder for stand hunting. I've tried different combos of boots and socks. Some of them work better than others but in the end, my feet would always get cold after a few hours.
I upgraded to some heated socks this year and it was an absolute game changer for me. Was able to tough it out in single digits multiple times during muzzleloader. I still use a heavy wool sock over the top of them to trap heat, but I was pretty shocked at the difference.
I bought
these. Brand is Field Scheer. They're still spendy but not nearly as much as the Lenz brand and I'm not willing to pay $300+ plus for socks. These seem pretty durable too. The app is a nice plus; there's 4 heat settings and the batteries seem to last a long time. Wish I had bought some years ago!