Do pro shop owners consider themselves professionals or business people. What is there goal? To maximize profit or to build a steady clientel with satisfied customers.
As a professional, I listen to what my clients say they want, but will not say or do what they want just to make them happy or put a smile on their face. They ultimately expect that I will do what is in their best interest.
Sale the ball, but with the explanation that it is not going to solve the problem that the bowler is encountering, and that it is not the ball that he recommends. Then, drill the ball to come as close as you can to making it work, and adjust the cover too, if that is called for. Tell the client what you did and why you did it. You might have a client for life.
Or, sale the ball, drilled for maximum hook, and continue to wonder why you are losing buisiness.
Those that can do. Those that can't complain. Pimpin ain't easy, but it's mandatory.
Most things we like, we don't need. Most things we need, we don't like. Don't confuse your likes with your needs.