The buddy heater is the best! I have 2 girls that love to hunt and don't really like the cold. We have hunted with snow falling and it being really cold. The Mr. buddy heater kept them toasty. We usually just wear a light jacket and that is it. The girls can go all day like that. And yes we have shot deer with the heater going.
Do you have the small 1 bottle one or the larger 2 bottle version? Use in a well built blind or a pop up?
I have a pop up that we hunt out of and Im thinking about the larger buddy heater since it has a fan and 2 bottles. I think its another $40 or so.