For double, there is actually a lot more clearance. The extras come from the relative position of the isolation knob vs the valve opening, and the lack of 1st stage. My isolation knob still actually point about 30 degree toward my head, I am still OK. And yes, I also have a dent on my 12mm hood
I am too lazy to take new photo. Here is my very starting setup. You can see how the first stage relative to the wing, camband at the crown break. Note: No, I did NOT dive with turret pointing up, it is just for position reference. And I no longer own the particular wing, plate and harness. But I think the tank position vs any wing should be similar