I have to agree with previous posts! Stay there all day. Many other hunters will leave 11-12 for lunch and come back in 2-3 and they will probably have the deer moving. I think you should strongly consider getting a climbing stand. Prarie grass can be very tall and most blinds won' t let you see above it. You really need to be up in the air so you can see as much area as possible. Good luck and have a great hunt.