VanHalenLover:I am merely asking for the default to be 'no flag'
And that's the bad idea. Leave this to be a user-selectable option: the default setting. Person A might choose no flag to be the default, and person B might choose leave flag as the default. As I said, it's often very difficult to follow your opponent's putts if the flag isn't in its place.
VanHalenLover:I'm willing to bet that most people hide the flag on each and every putt.
I'm convinced that the opposite is the case.