It makes it very easy and quick to duplicate drillings from ball to ball actually. You can also fine tune ball motion.

Here is a link to Mo's Article at buddies pro shop

https://www.buddiesproshop.com/114/Mo_P ... hnique.htmKind of a long read, but you can get the idea of things from the first paragraph. Also the first part of each section will also tell you basically what the drill angle , pin to pap distance, and the val angle do..

Finally, the final section has a good general overview at the bottom.

Here is a section I copied and pasted from the article:

"If the two angles add up to 30º, the ball will transition as quickly as possible. If the two angles add up to 160º, the ball will transition the slowest. The ball driller should keep the sum of the two angles between 30º and 160º to create effective ball reactions while still allowing the ball to maintain hitting power. The ball driller must still keep the drilling angle between 10º and 90º and the angle to the VAL between 20º and approximately 70º (depending on the bowler’s track). Here are some guidelines for choosing the appropriate sum of the two angles to accommodate different factors:

· The ball driller should use smaller angles sums for speed dominant players and larger angle sums for rev dominant players. The ball driller should use medium angle sums for players whose ball speed and rev rate match.

· The ball driller should use smaller angle sums for higher axis tilt players and larger angle sums for lower tilt players.

· The ball driller should use smaller angle sums for longer oil patterns and larger angle sums for shorter patterns.

· The ball driller should use smaller angle sums for higher volumes of oil on the lane and larger angle sums for lower volumes of oil.

In conclusion, the sum of the drilling angle and the angle to the VAL controls how quickly the ball transitions from skid to hook to roll. Using a smaller sum of the two angles will turn translational energy into rotational energy faster.

Even though the sum of the drilling angle and the angle to the VAL controls the rate that the ball transitions from skid to hook to roll, the ball driller can control the shape of the breakpoint by changing the relationship between the drilling angle and the angle to the VAL. Larger drilling angles in relation to the angle to the VAL will create later, sharper breakpoints (more backend). Smaller drilling angles in relation to the angle to the VAL will create a sooner, heavier roll (more midlane)."