These are various quotes from around the thread:
most times a miscue happens is with draw or worse yet draw coupled with english.....but what exactly is happening in the stroke that causes this mis-cue???...and why does it seem to happen far less with extreme top english???
The main factor is probably that the tip tends to dip downward with a slightly too-far-forward grip, which causes miscues with draw but not with follow. When your forearm is about perpendicular to your stick the tip travels more or less in a straight line, but right after this the tip begins to dip - so setting up correctly, with the forearm perpendicular when the tip is right at the CB is very important.
Another specific type mis-cue is the draw with english....sometimes it seems like the tip deflects off the ball...even though struck exactly where intended.
The "strike zone" is a circle (about the size of a quarter) around centerball - you can't go as low with sidespin or you'll hit outside the strike zone circle and miscue. If you hit at the bottom of the circle, you can't go sideways at all.
Do you stay with the no elbow drop and move your grip hand back to delay the dip...(which also changes the timing of the delivery) or do you you maintain the same grip position and use elbow drop to maintain the tip tragectory?
I recommend moving the grip hand back to keep the stroke as simple as possible. You can do this for all shots or just for extreme draw shots, but I recommend doing it for all shots so that your follow shots also improve. It will take some getting used to.
I do believe Mr. Jewett was involved in the videos, but I could be mistaken him for someone else.
Bob and Dr. Dave are colleagues at Billiards Digest, and Bob certainly consults with Dave, but I think Bob's main video claim to fame is the Jacksonville Tape(s).
If the tip hits the CB first, it will be gone (the CB) before the tip could proceed down to the cloth and then back up again.
As somebody else said, high speed video shows the tip re-contacting the CB after sidespin miscues, so I'd expect the same with draw (maybe more so, since hitting the table surface would speed up the "rebound"). I don't know if this is a major factor in hopping the CB.
if you're hitting the ball softer, the pressure between the tip and ball during contact is decreased, and you can't hit as far out on the edge without the tip losing grip and miscuing.
I'd expect the opposite. I know that when I want to hit outside the Strike Zone I seem to have more success with a softer shot, but some of that may be because I'm more accurate hitting softer.
I wonder if a firmer bridge (perhaps shorter bridge) would keep the tip from that downward deflection???
Firmer: no, because sideways movement of the shaft isn't the cause of miscues; if the shaft didn't go sideways the CB would (anyway, the soft flesh on your fingers doesn't allow you to hold the shaft completely immovable).
Shorter: yes, because the tip won't dip as much (less "leverage").
On the other hand (for power stroke shots) I wonder if the shorter bridge length would hinder the applied spin?..... (seems to me I get better draw results with a slightly longer bridge vs a shorter bridge)
If there's any effect from this, I'd expect it to be only because you can gain more stroke speed with a longer stroke.
pj
chgo