So I recently got fitted for new irons and they have been awesome. At the time, I did not get a driver because I have a 2 year old RBZ driver that is still in perfectly good condition. I got it as a gift though and was not fitted for it nor have I ever done a driver fitting. Naturally I've got the bug in my head now that while it's surely the jockey and not the horse maybe a different shaft or better fitting weapon will be a game changer. I'm sure I'm just trying to justify buying more toys but curious how much people think the fitting process makes a difference in their performance with the Big Dog.
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Getting a properly fitted driver did wonders for me. Your mileage, obviously, may vary.
The random snap hook might be a club/shaft issue, but I would guess it is more likely a swing fault. Look for a well fitted driver to improve on things that happen consistently in your "average" shot. i.e. better distance, changes in a consistent slice/hook, higher/lower flight. For me, it was fixing a consistent slice and adding ball flight height.