I'll wait for a device that beeps or lights up or vibrates to tell me when my bridge V is on the required line of shot.
As I mentioned in another thread, there are ways to reduce the effect of stroking errors and I don't think it's particularly hard to stroke well enough to make most intended shots. And I don't think we need to track velocity and acceleration data to recognize a controlled smooth stroke; a video camera does a fine job.
Imho, these devices are mainly to increase instructor's incomes, not to improve player's games significantly. In fact, it may lead many to paralysis by irrelevant analysis.
Colin
Yep. I'm once again getting back into the game after another long layoff. Had no problem getting my stroke back rather quickly.
On that note, I also think pool players make too big a deal about "aiming," as well. I've been playing a lot of Virtual Pool lately, a game where you always have perfect stroke, sighting, and alignment, and my aiming is rock solid. I also think many above C players underestimate their aiming as well as their stroke.
What's most difficult to keep consistent, for me at least, is sighting, alignment, sighting, alignment, rinse and repeat.
I'm not speaking absolutely, but I think sighting and alignment issues are what cause us the most grief, and are often blamed on a bad stroke or bad aiming. Your stroke is probably good, you're just not sighting the center of the cue ball correctly and probably aligning yourself askew of your aim point. Or you align yourself correctly, but your subconscious "pulls" you into steering the shot.
I can't count how many times I address center ball on a cut shot, looked at the object ball, and then when I look back at the cue ball, I've drifted a half tip to the outside (I think this is because of how often we use outside English in pool on cut shots, our muscle memory forces us outside against our will).