Yup, Steve Davis. I think there's a 15-part series out there. Back-of-ball aiming is built on fractional aiming combined with ghost ball (called "dummy ball" in the UK).
-Sean
Sean,
What is back of ball aiming? I don't think I'm familiar with it. If it's too long of an explanantion, don't make the effort as it is not that important. I was just wondering.
Regards,