I know you like your device. And for very specific situations it may be cool (like for a true beginner and maybe for gimmicky training / funsies). And, admittedly, the auditory feedback and movement of the hoop is a plus. But even with that, hoop trainers really aren't a great tool for a host of reasons. For example, with the 2.75" (well, with any of them really), you can still hit the cue ball with unintended English and have it go through the hoop. It's actually pretty easy to shoot through 2.75" side. That's about
1/4" of room on each side of the hoop. If you hit an object ball 1/4" off target, you will almost certainly miss the shot. [even the 2.375" hoop has plenty of room]. So you need to be pretty new to the game for that to have any value.
As Bob was alluding, you can accomplish the same level of training without hauling around something relatively large (with a cost component).
It's also super easy to replicate (and improve on the design). Maybe a 15 minute design and 45 minutes to print at this size with one color change (and you could streamline it and make it print even faster).
Definitely an "A" for effort and trying to bring something to the pool masses. But low marks for the somewhat confrontational attitude.
-td
(Edit: I designed and printed one in under an hour)
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