The best thing about blinds is YOU CAN'T FALL OUT OF THEM!!
This is ABSOLUTELY NOT TRUE!! [:D]
I was hunting out of my blind and I set up on the edge of a field that gently sloped downhill. Awesome corner spot. I tucked the blind in under some pine trees that offered beautiful natural concealment. So I got the whole blind setup then I went to setup my chair. I sat down and the one leg must have found a hole or something because the chair tipped over forward and to my left. Inside the blind there is absolutely nothing to grab. Over I went. I fell right into the corner of the blind. The blind of course, followed suit. I made one complete somersault with the blind. It must have been absolutely hysterical to see and in spite of myself, I laughed the whole way over.
Once I got the blind re-setup, I had a great hunt. I took a shot later that day at a nice big doe but I unfortunately shot the arrow right under.
I will say this about blinds.....
They offer more comfort however, it's been my experience that deer do notice them and are very cautious around them. It's definitely best if you can set them up ahead of time and add natural concealment. If not, try to set up the blind in as concealed a place as possible. Turkeys on the other hand seem to be completely oblivious to them. You can set the blind right out on a field and they simply do not care.