wouldnt be kind of cheating if trackir stops head shaking from happening?

[recoilfx]

Depends on what kind of shake it is. A lot of head shakes move around the center point, which doesn't ruin gunnery and is easy to adapt to. It would be cheating if real translation of the head is removed - I don't know if that's possible with smoothing in trackir though, it's programmed into the game.