I sat in my first ground blind last week. It was 16 degrees outside . I set it up in th evening and the next morning I sat for a bit and 2 does came by. The old doe looked at i ta bit and snorts. Then a buck comes tearing in and off they go. I noticed I was warmer than if I would have been in a stand. I'm sticking with ground blindes. I'm also going to make my own out of tarps to save money.