On a related tangent, I would like to ask this question.
Is it possible to make a cockpit mod that completely removes the sights from these planes?
Seriously, they are worthless and I have a feeling a lot of Japanese pilots made a little "field modification" by ripping these sights off from their field of view. I'm fed up with them so badly it isn't even amusing.
Back when you could move your head around the cockpit a bit more freely, I used to just move my head high enough that I could see above the sight. And, I got much better results with free aiming than with the tube sight, because I could actually maintain some situational and positional awareness. But since 4.11 and its stock 6DOF implementation, somehow the pilots are again stuck with very little room to move their heads especially on vertical axis, and they apparently cannot move their heads high enough to look over a ~5 cm diameter tube. Which is kind of strange considering even if you're strapped to a seat, you would usually lean towards the sight and leaning towards the sight would lower your head quite significantly, so it would actually make sense that the "default" head position would be significantly higher than the sight visual axis. But then again, every plane in IL-2 seems to be flown with midgets that can hardly see over the cowling at default head position.