The marker itself fits the required dimensions of USGA rule 4.3, and doesn’t provide slope percentage or stimp speed with the marker itself.  The Perfect Read user guide that you use in tandem with the marker fits within the USGA size requirements.

Only when USGA local rule G11 or G12 are potentially adopted at an elite event  would you have to adjust how you use Perfect Read notes book. In all scenarios, the marker itself is legal to use and conforms to rule 4.3.

No, the reading of the green and reference of the guide takes approximately 15-30 seconds, which can be done as your playing partners are lining up their puts. 

The 3 factors needed to use Perfect Read (the stimp, your circle relationship with the hole, and slope percentage) are all things that become  easier as faster you develop new skills or master existing skills.

The start line gives you the ability to hole puts with the capture speed, 8-18” inches past the hole. By having an accurate start line, you can focus solely on pace.

No, the angular putting theory that Perfect Read uses naturally pushes out the break the further from the hole you are. The Trigonometry behind this is that if you’re putting on the same line with similar features, it doesn’t matter if you’re 5 ft, 10 ft, 20ft, etc., away.

The angle Perfect Read provides moves the start line out further as you pull away from the hole with the same angle, so the only thing changing is the pace needed for capture speed at each distance.

Perfect Read is the only putting system that has been able link its ready-to-use math to a physical ball marker. With the marker and notes, your precise accuracy is now coming from the ball itself.

Other systems developed over the last 20 years provide a read to a spot a certain amount of inches outside the hole. The difficulty with this is that you now have to aim your ball at an imaginary spot. Perfect Read allows you to set up a start line and only think of pace.

With Perfect Read, the read is the same for everyone as you use the combination of stimp, circle zone and percent slope for the Perfect Read. 

We have 15 dashes off each side of the straight putt. Most putts on most greens will fall within zero to five dashes. 

With this accuracy you have a putt not exactly on a dash. When this happens, we recommend rounding up or down to the closest whole or half dash. You can either take out a little break if you’re a firm-pace putter or add a little break if you are a die-speed putter.

Greens come in all shapes,  sizes and conditions. Most, if not all, are designed to have at least some slope, as they need a certain level of drainage to maintain a healthy putting green (typically 1-2% slope). Even turtleback greens have some slope for drainage.

Course designers and architects might have multiple tiers or circles within a green. It’s important to find your “circle zone” closest to the hole. You should also find the fall line on your side of the circle (uphill or downhill). This is important because as the golf ball is slowing down around the hole, the slope there will have a greater impact on the amount of break. Other factors are still important, but Perfect Read simplifies putting from a distance when multiple slopes are more likely to come into play.

You may have to adjust the break for counter zones. When putting from 20 feet or more, the pace becomes more important than the start line. Perfect Read will still guide the putt into the correct zone, but managing expectations from a distance is important. When practicing putting, work in 3 zones: 3-foot putts, shorter range 4 to 10-foot  putts, and 20+ ft lag putts, with a focus on distance and control.

We recommend using a permanent ultra-fine marker to draw at least 1/4 of the ball circumference.

However, using a ball with alignment arrows or factory markings will work. The key is the ability for the ball to accurately align with the dashes on the Perfect Read ball marker.