RE: Do I really need a double bull?
How tall are you? I can take a standing shot in my GroundMax and I'm 6 foot. Not necessarily considered real tall I know but it's one of the taller blinds out there. Should give you plenty of space when hunting.
Double Bull makes a great blind no doubt. And they truly are the only one to give you 360 of shooting. But I can get about 300 plus I't bet in my GroundMax by opening and closing the silent windows from the inside as needed and that's good enough for me.