I really don't think a person can test, plan, thinkout, test, plan, and keep testing enough to adapt his gear to cold. Cold weather and mother nature throws so many different things at you and every experience is never the same. You just have to be prepared for the worse conditions possible and if your not, your going to have that "bad experience". This is a good thread that I am going to keep up on as we need to keep this going as the weather turns colder especially for the new hangers as well as those that are thinking of hanging in the cold. This much I do know and have come to respect, is with age, you have to work alot harder at keeping yourself warmer and climatized moreso for the cold elements and as I spend alot of days from a couple of hrs before daylite to a hour or so after sunset (very long days outdoors) hunting in wet, miserable conditions, I have to find more ways to stay warmer. Sitting in a tree stand sometimes 25 ft off the ground in inclimate weather is alot like hanging in a hammock off the ground.
Age is a butt kicker for sure when your trying to keep your core temp up.