I always hunted just sitting with my back against a tree for alot years.
The first year I had my ground blind I wished I had bought one earlier. It will keep the wind and rain off of you and you can sit in a chair instead of on the ground. When its really cold you can put a heater in them.
Dink
DINK...a heater? What type or name brand???? CO problem, or are they zero CO type so you don't asphyxiate yourself?