RE: Cold (Talking Freezing Here) Weather Tactics
I've been hunting Northern Minnesota for 20 years and have a bunch of suggestions...
1) Keep that draw length short - over extension is twice as bad when bundled so it's imperative that your dl is super short.
2) Layer - light & many layers - start with poly & work your way to the top. Make sure the 2nd to last 'outer' layer is wind proof. My final outer is 3dleafy scent-locker & under that is windstopper stuffs.
3) Cabela's has a mask caled rhinoskin that is thin & just enough to take the chill off the face - I cut out holes for my ears so I can still hear - then pull my fleece stocking hat down if my ears get cold.
4) Felt lined boots - swampers - like Lacrosse Icemans - that or US Military 'mickey' boots - and layer the socks
5) Get a 'hand muff' and use disposable handwarmers to keep your hands warm. I use a bow hanger & keep my hands tucked in the muff at about 105 degrees & pull them out only in preperation for a shot.
I spent the last 4 days on the stand back in MN & it was cold - real cold... One of the mornings it was -2 when I left for the stand. At temps like that it's only reasonable to expect 3 hours on a stand & that's what I could do. On the 3rd day of the 4 day hunt I X'd a buck 20 minutes before dark after being on the stand almost 3 hours. If you can't make the shot when it counts then you may as well not waste your time right??
Good luck!
Aim small miss small