I am planning two multi-day trips on the AT through the smokies during late December and early January. I am planning on staying at the shelters however the downside of the shelters in the area are almost all are at high elevation which means cold and wind. I have read about folks hanging a tarp across the open side to block out wind and get a possible 10 degree increase from outside temps. My question is what size tarp does this require? In one of the posts it said a 10x30 but the shelters i have stayed in i think a 10x20 would suffice. Thoughts or other ideas?
P.S. If anyone would like to join on these cold weather trips i would be glad to have some company. It's hard to find folks that wanna be cold haha. Just pm me if interested.
Thanks