The rule of 31 applies to sport shots and flat patterns. On a house shot as you attempt to move inside your getting in more oil.
Standing on 20 aiming at 10 should be a pretty straight shot so your break point should be more around 9-10 at that point.
Try shifting a few boards right with your feet and a few boards right with your target. There’s still room thier without playing outside 2-3 officially the twig
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