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Manufacturer→Pro-CG Drilling Layouts
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Recommended Layouts for EXPERT Ball Drillers
Pro-CG bowling balls are often utilized on the PBA Tour and have helped out Pro Staff achieve great levels of success. You, too , can reach the pinnacle of your game with this very dynamic piece of equipment. Please refer to the layout options to determine the best for your needs. Good luck.

Important:
Because all bowlers have different Positive Axis Points (PAP),your layouts may not have the same appearance as those illustrated below.

The following layouts are for right-handed bowlers. Remember to flip or rotate to produce "mirror-image" for left-handed players.

ProCG Legend

Layout 1
Leverage - No Hole

Layout 1: Leverage - No Hole, Good for Medium to low rev players
  • Place the pin 3-3/8" from the PAP to product maximum flare.
  • Locate RAD in the STRONG position, halfway between the ball track and PAL
  • Be sure to check for excess side weight, as a balance hole may be necessary to make the ball legal
This layout works well for medium to low rev rate players.

Layout 2
Low Pin - Low Hole

Drilling Layout 3: Low Pin - Low Hole, Good for Heavy Mi-Lane Roll
  • Place the pin 4-½" from the PAP under the fingers.
  • Locate RAD on the axis midplane.
  • Place extra hole on line from the grip center through the CG 1" inside the PAL
Use this Layout for Heavy Mid-Lane roll

Layout 3
High Pin - No Hole

Layout 3: High Pin - No Hole, Creates a Skid/Flip Reaction
  • Place the pin 5" from the PAP above the fingers.
  • Position RAD 1" left of the STRONG area (be sure to allow at least a 2" buffer between ball track and RAD!)
  • Be sure to weigh the ball for static balance. If necessary, remove excess finger weight - drill the finger holes very deep.
Creates a Skid-Flip Reaction

Layout 4
Low Pin - Large Hole

Drilling Layout 4: Low Pin - Large Hole, provides an Aggressive Reaction
  • Place pin 4-½" from the PAP below the fingers.
  • Position RAD 1" left of the STRONG area. (Be sure to allow at least a 2" buffer between the ball track and RAD)
Produces an Aggressive Reaction

Layout 5
High Pin - Large Hole

Drilling Layout 5: High Pin - Large Hole, Creates Length and Backend
  • Place the pin 5-½" from the PAP above the fingers.
  • Locate Rad in the STRONG position.
  • Use balance hole on the PAL, or axis midplane, to remove excess side weight.
Creates Length and Backend

Layout 6
2-½" Pin - Large Hole

Drilling Layout 6: 2-½ Pin - Large Hole, Provides Early Roll with a Smooth Transition.
  • Place the pin 2-½" from the PAP
  • Locate the RAD 2" right of the ball track, just left of the STRONG position.
  • Locate large balance hole on PAL.
Generates Early Roll with a Smooth Transition.
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