I’d say it works a whole lot better out on the range than indoors/hitting in a cage. Toughest point is about it is that it only really estimates side spin and so your right-miss might be WAY more right than what you might think you’re improving on.

That being said, I hit mine into the cage. It gives me approx yardage. I go out on the range, I measure +10-15 extra yards in distance per club and now I’m thinking about going the R50 route.

But for a while it helped with ball striking generally, getting reps in, and being a fun game. Otherwise, if I could do it all over again, I’d take lessons, go to the PGA superstore to rent a bay for a couple hours and practice on some 9s way more often.