Found the hole size idea pretty funny....

Choose a Bowling Ball

When investing in your bowling game, your most important piece of equipment is the bowling ball. Here are some factors to consider.

    * Weight of the bowling ball: A bowling ball that’s too heavy will be difficult to handle, while a ball that’s too light will have too much lift. As a rough guide, men should try balls in the 14, 15, and 16-pound range and women should look for balls from 10 to 14 pounds. Children need lighter bowling balls.
    * Size of the bowling ball holes: Generally, heavier balls have larger holes and lighter balls have smaller holes. Make sure the holes fit your hands comfortably.
    * Left-handed versus right-handed bowling balls: Right-handed balls are drilled with the ring finger hole an eighth of an inch further away from the thumb hole. Left-handed bowlers may find that specially-drilled left-handed balls more comfortable.
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Duke Harding
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"Anyone who stops learning is old, whether at twenty  or eighty.
Anyone who keeps learning stays young.
The greatest thing in life  is to keep your mind young." -- Henry Ford