I have made significant progress in the last few months. I'll spare the details of what I have changed.

This past weekend I played my best pool ever in competition. As a TAP SL 6, I played three rounds (matches) of 8-ball in the Title Holders Qualifier tournament. I had three BnR, one in each round, including what might be considered an amateur's Two-Pack (ended round 1 with a BnR, then seven hours later, started round 2 with a BnR on the same table.) In the third round I broke and ran to the 8 but overshot shape and couldn't drive home the fourth BnR of the day. Grrr.

So, I figured since I am shooting very well at the moment, I would record myself to use as "reference" shots, to compare it to any future situations where I might be struggling. I took four angles of the Mighty X drill:

Camera facing dead straight on Login to view embedded media Camera behind me dead straight on Login to view embedded media From the left side Login to view embedded media From the right side Login to view embedded media
On all these shots I successfully pocketed the OB with minimal (< 1", 1/2 ball or CB less rotation) or no movement of the CB after contact with the OB.

I noticed one thing, though, that I wasn't thrilled with. My back hand was ever so slightly forward of perpendicular to the cue, maybe 1 or 2 inches.

I think I might be answering my own question here, but what are the pros and cons of having my back had ever-so-slightly forward of perpendicular? I experimented with moving my back hand backward a couple of inches. I don't think I am imagining it, but the hit felt stronger. Indeed, it seems that draw is more powerful. It doesn't seem to affect my accuracy (except when I moved it backward even more, just to see how it felt that way; on these shots I was well behind perpendicular with my back hand; I had a few inexplicable misses in this configuration.)

Is it worth "fixing" my back hand position by moving those 1 or 2 inches back, considering I am shooting very well at the moment?

Thanks for feedback.