Lefty,
Tell your pro shop guy to jump on here and have a discussion with this. Let's see if he actually knows what he's talking about it if he's full of hot air, because you seem incapable of shaking the notion that static weights don't matter. I know my stuff. I talk to plenty of pro shop owners who have customers like you, and call them out on their bull. If your "negative cg" ball isn't usable during league, why not adjust the surface?
This topic is getting silly. You see studies, and don't buy it, but you have a clue? Get a job with Brunswick and SET THEM STRAIGHT!