I’m now persuaded that golf would be improved in every way if a rolled back ball was introduced, particularly (but not only) for the elite golfer. In the future we need shorter, cheaper courses that take less time to play.
Before my back said no more, I used to enjoy playing squash, a game at which I was every bit as inept at as I am at golf. But squash has a series of balls which offer less bounce and speed the more ability you have (they even have a super ball which is only in play for the professionals.) Again in a colder region you might choose to use a faster ball than you would normally play with.
But here's the interesting thing, despite the ball rules in Squash being designed to help players of all abilities, once you are half competent all everyone wants to play with is the most difficult one, the yellow spot. The marketing departments of the various manufacturers would have field day selling the new pro ball – for the skilled golfer. I would therefore predict that within 5 years of the pro's adopting such a ball all serious players would want to use it as well. Beginners, wise folk and older golfers would still get the help available now.
This is the link
http://www.worldsquash.org/rules14.htmlAnd this is how they specify the balls.
SPECIFICATIONS OF A STANDARD YELLOW DOT SQUASH BALL
The following specification is the standard for a yellow dot ball to be used under the Rules of Squash.
Diameter (millimetres) 40.0 + or - 0.5
Weight (grams) 24.0 + or - 1.0
Stiffness (N/mm) @ 23 degrees C. 3.2 + or - 0.4
Seam Strength (N/mm) 6.0 minimum
Rebound Resilience - from 100 inches/254 centimetres
@ 23 degrees C. 12% minimum
@ 45 degrees C. 26% - 33%
NOTES
1. The full procedure for testing balls to the above specification is available from the WSF. The WSF will arrange for testing of balls under standard procedures if requested.
2. No specifications are set for faster or slower speeds of ball, which may be used by players of greater or lesser ability or in court conditions which are hotter or colder than those used to determine the yellow dot specification. Where faster speeds of ball are produced they may vary from the diameter and weight in the above specification of a standard yellow dot squash ball. It is recommended that balls bear a permanent colour code or marking to indicate their speed or category of usage. It is also recommended that balls for beginners and improvers conform generally to the rebound resilience figures below.
Beginner Rebound resilience @ 23 degrees C not less than 17%
Rebound resilience @ 45 degrees C 36% to 38%
Improver Rebound resilience @ 23 degrees C not less than 15%
Rebound resilience @ 45 degrees C 33% to 36%
Specifications for balls currently fulfilling these requirements can be obtained from the WSF on request
The speed of balls may also be indicated as follows
Super slow - Yellow Dot
Slow - White Dot or Green Dot
Medium - Red Dot
Fast - Blue Dot
3. Yellow dot balls which are used at World Championships or at similar standards of play must meet the above specifications but additional subjective testing will be carried out by the WSF with players of the identified standard to determine the suitability of the nominated ball for Championship usage. The slowest speed of balls intended for elite players and Championship usage may if required be identified by a double yellow dot. Such balls will be deemed for the purposes of this specification to be yellow dot squash balls.