I don't doubt that one bit. I could probably use a lesson on jumping from someone that really knows what they're doing.
It’s also worth mentioning that a more “grippy” tip makes accuracy much more challenging.
Because you’re striking down on the cue ball at a steep angle, any strike that is the least off center imparts swerve to the cue ball, as in a masse. The grippier the tip, the more unintended swerve. For a longer shot, it can easily cause a complete miss even on an otherwise fairly well executed jump.
Unless my intent is to draw the cue ball on a relatively short jump, or to intentionally swerve it, I seldom even chalk my tip for just that reason…
Funny, learning to jump story…
Last year one of the ladies on my league team was out in Las Vegas for the USAPL national tournament. 66 years old and about a 350 Fargo. She had previously tried to jump and really wasn’t very successful at it. She pretty much had proven me wrong when I had told her that I could teach anybody to at least hop over a ball in less than 10 minutes. She had proven to be the exception to that rule.
While out there she was wandering around the vendors, trying out various jump cues and practicing her “technique”. One day she texted me that she was practicing and that “the nicest young man“ had spent over a half hour helping her learn to jump. She said even he was a bit frustrated by her lack of progress. She said the only problem was that people kept coming up and asking for his autograph and interrupting them. I asked who it was, and she said she had no idea, just that his name was Dennis.
I sent her a quick picture and asked “this Dennis?!”