Kathy, I remember your plight of last winter and the tar paper. It made such a huge impact on my memory. I keep hearing over and over how important it is for the inner cover to have a slot in it for ventilation in wintertime, the moisture espaces through this hole/slot, call it what you may. Warm air rises, along with condensation. The cold will not kill the bees, it is any moisture build up that may drip cold water onto the cluster, that is the killer.
You have told us that the wind brings moisture into the hive, that is a very real concern. BUT...now I must ask, does the wind always blow from one particular side or is it all around? Perhaps you could use inner covers in wintertime that had a couple of small holes drilled in the lea side of the colonies? This could be used all year around, even in summer to.
I don't know if this type of design would/could be applicable to your harsh weather, but it is some food for thought. Have a wonderful day, girl, great life to boot. Cindi