[robocat]

Hopefully you can synch the light flashes to the ball rotation:

1: maybe make the ball look like it isn't rolling - or even backspinning

2: perhaps it could you make the amount of side-spin or other spin more obvious to help learning

Maybe hard to read the ball rotation accurately: even if the ball was marked with dots or bands that help?

[TylerE]

That sounds quite hazardous to anyone who happens to be epileptic.

[RichardHesketh]

Dunno where you live, but according to this (https://www.epilepsy.com/stories/shedding-light-photosensiti...) from a US charity: About 3 to 5 percent of the 2.7 million Americans with epilepsy (approximately 100,000 individuals) are photosensitive. That's a lot, but the chances of one walking in to that bowling alley are likely negligible. Photosensitive epileptics are highly likely to be aware of their condition and avoid risky environments in any case.

[TylerE]

Why make a recreational activity "risky" when it has zero reason to be?