Smok, I dont know what type Blind you are using, But if your's has the Spring Steel Bands, that errect the Blind, Be carefull about setting it Up, to close to a Roost Area. A Friend of mine, Bought One of the Less expensive Blinds, and Took it Out of it's Nylon Case, and Dropped it On the Ground, within 100 Yards of a Known Roost Site. The thing made noises that I can not even describe with Word's, and the Bird's Lit Out of that Roost Site like a Scalded Dog! He asked me where I think that they may have Flown too, and I remarked Boliva. 100 Yards is Fine, if you are quiet setting it Up, and not letting it Swoosh Up, in one felled Swoop. Good Luck! Be safe!