Mike there is only one TRUE name in ground blinds, DOUBLE BULL Archery. They cost a lil more but the features make the differene worth MORE than the price difference between a real tool and the competition that mostly consists of childrens " camo tents" . The Double Bull wont flap period as the fabric sides are pushed taught when the blind is setup. Wind is no problem either. I havent had to stake mine down yet and have used it in winds up to 20-25mph. If you experienced higher winds or wanted to leave it out overnight, simple additions of stakes is made easy by presewn in stake pockets on each corner and stake tie downs that are connected to the hubs on each center of each side. They are VERY roomy as well. Two can hunt comfortably and 3 or 4 would fit if you really wanted them too.
I dont know for sure, but assume the basic design theory for the blinds was taken from utility/phone workers portable " pop up" yellow repair shelters that you see them using. They are sturdy and weather resistant as well.
Good luck,
RA
www.doublebullarchery.com