I agree with you here.
Any bowler worth their salt is going to get that "gut feeling or intuition" when they begin anticipating the transition on the lanes, and you certainly don't have to be a Pro of any kind to see this. You see it every week in different forms with everybody that you are bowling with and against.
Whether it's changing your line or your ball, you should have a pretty good idea as to when this change is going to happen.
There are rare occasions where you might not have to change anything for the entire night. As long as you're getting the same reaction there's no need to change anything.
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