I agree with everyone whos been saying that turkeys somehow arent bothered by blinds. I was deerhunting one year and 2 hens walked about 3 feet in front of me. Ive also heard of someone using one and a turkey walked inside. Good thing about them is you have basically 360 degrees shooting since they wont see you. Only hard part is unzipping the window/door without them seeing to put your gun out.

Heres a story on a tom i shot about 3 or 4 years ago using a blind.....

I had no luck all day and was just starting to pack up when I heard footsteps coming closer and closer. So I sat back down and kept listening.It was 2 nice toms walking in. Nogobbles or anything.They got so close that I could see them through the blind. I unzipped a windown VVVEEERRRYYY slowly to notice one of the toms about 7 yards away. I knew that I had no chance of actually unzipping the window and grabbing my gun and aim and shoot, obviously the tom would have ran off. So I figured the only way possible was to barely put the barrel on part of the window and pull it down to make it unzip (the wrong way to unzip something) and then shoot. It worked. I pulled the hammer down, ripped the window down, aimed and shot....all within about 2second. Turkey went down 7 yards away.

They work good, believe me. Also, you can keep things in it overnight....decoys, calls, food..etc.