Does the Vertical Groove Driver conform with the Rules of Golf?
Yes. Per USGA Decision Letter 2016-759A-C and 2016-760.
So what's the advantage?
The advantage is that the 450cc head, which is smaller than most heads on the market, allows you to gain more swing speed. The vertical grooves vs. horizontal grooves provide a tighter dispersion down the fairway and help you gain carry distance.
Will it help an average amateur golfer around a 15 -20 handicap, can this driver work for them?
The technology is really for higher handicaps as well. Most higher handicap golfers have an outside-in swing which causes the slicing of the golf ball. The vertical grooves will cause a straighter dispersion down the fairway.
How do spin rates compare to the other OEMs?
The Vertical Groove Driver averages 2200 – 2700 spin on average depending on the individual.
Overall what makes this a better club than the M2?
Besides groove change, the Vertical Groove Driver consistently beats the M2 in carry distance.
Can someone explain why vertical grooves impart less sidespin to the ball than horizontal? And if in fact less sidespin from vertical do they then impart over or under spin?
The vertical grooves impact the ball at contact and cause a more forward spin which allows the ball dispersion to be much tighter.
What does the octagon cut outs on top do?
It’s for airflow, and besides, it looks pretty good.
Do you need to play a different loft with this club than you typically would?
No, it’s neutral for the most part. If you typically hit a higher ball then we would loft down a degree.
How many pros are using this right now?
5 on the Champions Tour and more than a dozen pros are tweaking it right now.