I've run into this type of pattern twice. In one house it was for a traveling league that was supposed to be played on a challenge shot, the houses have been know to try and put out a shot that benefits their bowlers. The other time was for a tournament that was supposed to be on a house shot and yes there was some of the employees that were bowling in at least.
I don't know about the pin up thing all of my balls are drilled pin up, I would say that I have similar stats as the other bowler I mentioned and I don't believe that I could get that strong of a ball with that much surface to get that far right that deep without it starting to hook and go though the nose.
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