I and a friend each bought the big one last winter when menards had them on clearance and during 11% rebate. They are placed on a platform with trap door entrance. We foamed all seams, caulked outside and inside bottom, foamed the ceiling vent, and screwed the door closed, and sealed with weather stripping. The blinds hunted well this season so far. There is no evidence of leaking in either blind. The deer have been all around the blind during season. One has been shot out of them with gun. Many passed. It would work for crossbow but not vertical bow unless it is on the ground.