Rob wrote an article in Bowling This Month on Sept. 14, 2014. He shows a few photos of a lane from above and very good photos I might add. However, you'll have to first determine where you lay your ball down with respect to where you stand. Once you've determined that, then you can use his photos of the lane. Keeping it simple walk straight. In my case I use an offset of 11 boards from my slide foot and where the ball lays on the alley. Rob picked a target of the 3rd arrow (board 15) and his photo shows that you should lay the ball down on board 8 to hit the 7-pin dead on.
So in my case using his target I should stand on board 19 and target the 3rd arrow using a plastic ball or perhaps a very less aggressive urethane ball.
Of course, you could choose to use some other target to suit your taste. Perhaps use board 20 instead. His lane photos are pretty good if you convert his article to a PDF and then you might be able to drawing some lines on it to use for your own purposes.
The name of the article is "Buddy, can you spare a dime?"
Hope this helps...
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