For what it's worth...

I have discovered one way to make shooting harder, and consequently make multiple kills in a mission much less likely ... I removed the 'dead zone' from my TrackIR profile. Instead of roughly v-shaped plots I switched to straight-across plots for all axis.

Now my head movements are much more like real-life, with no preferential centering to the gun. This makes it much harder to line up the gun, as it would have been in real life. Getting kills in a mission is now quite difficult for me.

I ran into Immelman last night and he flew his EIII toe-to-toe with my Strutter. With the new TrackIR settings I hit him only a few times and he was getting the better of me. I was only saved when my wingmates jumped in. Nice!