It could just be that you have an unusually large head.
I fly the 109 F a lot; Its not quite so bad as the others, IMDO, but I've adjusted a few of the head positions. all of my "1/8th" views (fwd/left, fwd/right, rr/left, rr/right) are setup to get my li'l peanut-shaped bucket as near to the canopy as I can manage for better views so I can hopefully see those intrepid souls running away from me (and, conversely, those whom I might be running away from). Also, I mapped my forward hat toggle to look up and forward, again with a different head position.
This helps a little, but, having read through all this, I suggest just jumping the planes who are happily oblivious to your presence.
Cheers,
hub