Yeah man, Sark was always IZ based until he couldn't run it and then we switched to OZ. We can't come off the ball and move people at the guard and center spot. No one gets to the second level and so OZ is what we hang our hat on now. Trust me though. If Sark had a couple maulers inside he would switch back to IZ in a second. There is so much more you can do off of IZ. More importantly, play fakes off of OZ leave your quarterback exposed on the backside as the O-line dances to the left or right. If the ball doesn't come out right now the QB is just standing there with little to no protection. Even when you fake a stretch play and boot out the back a smart DE/Nickel can put a lot of pressure on you. That's what happened in the Vandy game. They kept firing the nickel while we were in play fake mode and caught us once on the boot and he tipped the ball leading to an int.
This is not to come at you just noting that Sark used to be an IZ guy.