I have seen and tried the Dr. Popper, in my opinion, it was a cue specifically designed for the dart stroke, and is more of a trick shot jump cue, for those really close jumps. It is really easy to hop over a ball one chalk away--so is the flying eagle. These are very good cues for those close jumps with the dart stroke, if that is what you like to do.
I tried to use the pendulum stroke with the Dr. popper, and the handle is too slim for me to even hold it in my hand.
I think in the game of 9 ball, a jump cue has to have some weight for the long jumps, and the control on the short. The balance is also very important.
Some players complain about miscuing with the phenolic tips, and the tip tends to pop off sometimes with some of the jump cues on the market now.
In trade shows when I had a table, I have seen lots of people trying out a new jump cue by testing the real close jumps (i.e., a ball or less). Interestingly, most pro players who tried my jump cue would test the longer jumps and the ones that require control, before they go to the real close jumps.
I think for the average players, a jump is just a shot to hit the ball, to avoid giving out ball in hand; for the pros, a jump is another shot which they try to execute with control and precision.
Perhaps to be accurate is more important than being able to hop over a ball a chalk away for the pros.
I also noticed almost all of them used the pendulum stroke. I asked them why, and they told me the pendulum stroke was what they had been trained in their muscle memory, and is therefore more controllable.
Most pros have a very good stroke, and they know how to jump--some of them were doing the jump with a full cue before jump cue came long!
Dr. Cue got one of my jump cue in Valley Forge, he told me it would replace his Dr. Popper. I was very suprised, because I think Dr. Popper was much easier to hop over those real close (one chalk or less) jumps as a full cue, since my jump cue was designed to be accurate, and easy to control, but not for those jumps that no one will go for in a serious game of 9 ball--but he told me he liked my jump cue better with the bigger cue ball. Doug Carter of the Stroke Trainer was the one introducing my jump cue to Dr. Cue.
I think for trick shot players, the Dr. Popper is a great cue for those close jumps.
I can jump and make my short and long jumps quite consistently--those who have seen me play knows I am terrible with the regular shots, which I miss all the time--but I am quite good with the jump.
With the Dr. popper, I have problem keeping the cue ball straight when I need to jump table length, and make the cue ball do things for shape. I think it is because there is hardly any taper and weight with the Dr. Popper.
But the Dr. Popper is real easy with the real close one chalk away jumps. I think even a player who has never jumped a ball before can do it. He may not be able to control his cue ball to go where he wants, but he can certainly hop the ball over, I think. It is very easy. I mean, I think anyone can jump a ball away with this cue easily.
Richard