The sweating is a big issue with rubber boots. Take a dry pair of socks along. After a big hike in, change socks before you get in your tree. Also, I've found that rubber boots, (come to think almost any pair of boots) will keep your feet about 10 deg. warmer if you put a felt insole in the bottom. A lot of cold comes up through the hard sole and compressed socksfrom the ground. I've warn regular La Crosse burly's down to about 19 deg. F forhours in comfort with the right setup.