The scenario and single response piqued my interest, but from what I could find it sounds like that is the right call! https://www.usga.org/content/usga/home-page/articles/2019/04/golf-rules-hitting-ball-with-practice-swing-zach-johnson-masters.html
This was an interesting note: However, prior to 2017 or if the Local Rule was not in effect, the player would have incurred a one-stroke penalty for accidentally moving their ball with a practice stroke on the putting green.
So, I spent a little time testing out these golf balls with my Mevo+. As many know, indoors, the spin can be off due to the short amount of time a radar has has to measure spin. Metal dots help, but even then, FlightScope users will occasionally see an italic spin number. Italics are your FlightScope's way of saying "I think this is a decent spin number, but I'm not super confident in that."
Sometimes the number is half, or double, and sometimes it's just off by some random factor. Sometimes it's dead accurate. The point is, when the number is italic, your FlightScope is unsure. It's not confident.
I tested these balls out by hitting a Pro V1 RCT and a Pro V1x RCT along-side a 2021 Pro V1 and Pro V1x. The regular golf balls were "stickered" with a single metallic dot, which we oriented at the top of the golf ball*.
A few mid-irons were chosen, with ball speeds ranging from 115 to 135 MPH. Shots were distributed somewhat randomly, while all clubs were hit with all clubs evenly. 20 shots were hit with each ball (4 each with a 5I, 6I, 7I, 9I, SW). Truly bad impacts were discarded.
Here are the results.
The Pro V1 Dot saw spin numbers that ranged from 3592 to 10918. 8 of the 20 results were italicized. All of the italicized numbers were in the 3590 to 3950 range, while the lowest non-italicized number was 4816. Some of the italicized results were hit with higher lofted clubs than the 4816 club.
The Pro V1 RCT saw spin numbers in a much tighter range, and more consistent when hit with the same club. Spin numbers ranged from 5221 to 11875, but within each club, spin numbers were within ± 750 RPM. There were no italic numbers.
The Pro V1x Dot saw spin numbers again that ranged from 3586 to 9342. Six of the 20 numbers were italicized.
The Pro V1x RCT saw spin numbers that ranged from 4791 (this was a toe-biased contact with a 5I) to 11752. Spin numbers were relatively consistent within each club, and once again, there were no italic numbers.
Of 40 balls hit with the dotted V1/V1x, 14 were italicized. 14/40 is 35%.
Of the 40 balls hit with the RCT versions, 0 were italicized. All got standard, "trustworthy" spin results according to the FlightScope Mevo+.
As you may know, the FlightScope Mevo+ and all other launch monitors, particularly when used indoors, have ballistics models. They read what they can — launch angles, ball speed, spin (RPM, spin axis) — and combine those with the environmental factors you've set (like altitude, temperature, etc.) to calculate the ball's trajectory: the peak height, the distance, the landing angle, the curve.
If the spin is off — say, instead of being 7200 the Mevo+ or your launch monitor thinks it's spinning at 5500 — you're going to get a poorly calculated ball flight. Your sim game will not be accurate, or your range or practice session, or your skills challenge, or whatever you're doing on your launch monitor.
I'm impressed. Now, it wasn't the biggest sample size, but 14 (35%) >> 0.
I'm going to be buying a few dozen of each of the V1 and V1x RCT models. Though they were developed with Trackman, the press release says they should work with all other radar, and that seems to be true. Further enhancements may be possible, too, but even if there are none the results were quite believable.
I plan to use my Mevo+ (with the Pro package at some point) in the GEARS bay, and occasionally for regular lessons. It'll be nice not to have to worry about the metallic dots — how they're oriented, whether they're wearing off from impact with the net, etc.
* You'll often read to place the dot on the front of the golf ball, because then when you hit the ball with backspin, it spins front to back. Placing the dot on the top accomplishes the same thing while spreading out the contact point on the golf ball around the "equator" instead of the one place opposite the metal dot.