i'm not sure to the distance but it truly helps some lanes even have a second set of arrows down lane that are about the same distance as the head pin reflection. i do know this, when i roll on a THS the break point, where my balls kicks left, is always at my mark. so when i target the tip of the 6 pin reflection i know that as soon as my ball hits the tip it makes its move through the pin deck. yes it is hard. no i'm not bragging. it is something i have practiced for a few years and i still miss allot, and i need more practice finding that reflection point for each sport shot the shorter patterns are easier to lock down, for me anyway.
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