I hunt both from trees & ground blinds. Last year I got 6 deer from pop up blinds so I feel safe saying they work. They keep you out of the wind & snow or rain as well so theres times you can be out when no other sane hunter is. I use a Ameristep dog house thats 5' square & about the same tall. That ones a bit on the tight side but has the shoot thru mesh & fits in tight places nicely. I also use a Hunters View lodge, that ones 7' X 7' & the same height. That ones nice & roomy, you can stand if you want & stretch. Its got 8 small windows & the top of the walls can be unzipped so you can stand & shoot. No shoot thru mesh but its a simple matter to put some velcro around the windows if you feel the need. I dont, I had deer 20 feet away looking right at the blind & they dont see you in there as long as you sit back & dont open too many windows. I like the blinds myself.