I got to thinking the other day about my dad's box blind. It's built very well, but I only recall putting one screw in each base plate, so 4 screws holding the walls and roof to the floor. It's 15 feet high and very well anchored. There may not be a box on top of it anymore
Ever spit it out rather than swallow it?
Enjoy it while you can. One day you might be complaining about NOT getting random pop-ups in the morning.