Agreed they work very well, we have used them a lot with great success. However a few tips are: wear a face net on clear days, watch your movements and keep your gun(action/barrel) covered up. Oh and leave your hat in the truck, becomes a pain in the butt
on a side note IMO the final approach blinds are probably the best in the biz and you can sometimes find them nearing season end very reasonable...just a thought.