Requirements for an accurate Aimpoint express read
1. What is the length of the putt You can easily determine the length of the putt while walking about the cup.
Now its time to get the Aimpoint express read.
It will be helpful to understand 1 finger will represent 1% slope. Using the breakmaster digital green reader 1 degree roughly is equal to 1.7 slope %. Standing directly behind the ball, you will use how ever many fingers you have calculated the slope to be to find the starting line. It helps to close one eye. Place one side of your finger the edge as the other side will indicated how much break you should play. If you are inside 8 feet start from the center of the cup. Without a digital green reader used in the practice rounds you can get good at determining the slope% based on how the green feels between your feet at different sections of the putt.
If you want the complete understanding of the entire aimpoint express reading system I would recommend the aimpoint express DVD that will leave no stones unturned.
The faster the green the more you will need to bend your elbow. This will bring your fingers closer to your eyes thus giving the impression of more break. As a general rule faster greens will break significantly more than slower greens. Similarly, uphill putts break less than downhill.
Aimpoint express should be added to your pre-shot routine to add more trust to all your reads. It takes no longer than 30 seconds to complete. It is a very reliable athletic method that will add consistency to your green reading. Just remember its more an art to get the exact slope and finger positions.