RE: Question for ground blind hunters...
Similar to what others have said I make sure there are no leaves or twigs in my blind. I only open the windows directly in front of me and the front corners. I also leave the mesh up. With this set up i can pretty much move around all i want undetected in my blind.
I also get the blind out there a few weeks befor season opener. It is brushed in very well backed into a big clump of thickets
This year I have a bow kill at 12 yards and a gun kill at 3 yards out of it. Yup 3 yards. Odd but true