jls, I agree with your assessment that many customers that come in look at shelf appeal, and that helps them determine their purchase (to an extent). I feel this is where the expertise of the pro shop operator can play a vital role in the sale of certain less "appealing" bowling balls like the Perfect Rival, for instance.
If you can recommend a ball based on performance, you can help sway that customer toward the ball you think matches up best to their game, which in turn will make them happy, and keep them coming back. I would hate to sell someone a good looking ball that performs worse, knowing I have a so-called "ugly" ball sitting there that will match up to their game better. As a fellow pro shop guy, you know where I am coming from on this one, I am sure. I understand the premise of your argument against the bad colored bowling balls, but on the same hand I feel it necessary to match up the best piece to each person that walks through my door, no matter what the color of the ball.
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James Goulding
Moores Pro Shop
Ball Driller / Consultant
USBC Blogger