well here is something similar
https://www.youtube.com/watch?v=3l0fAwmeOq8
In that example (which I've seen before) the shot "angle" is almost exactly the same each time, and the OB is pretty close to the hole, which increases the margin of error. I think whatever anyone uses to aim, this wouldn't be too difficult because of the margin of error.
It would be more instructive to see the whole process, at a length where we can eliminate "margin of error" as a potential factor. And not just "aim and fire." The whole process - center-to-edge, edge-to-whichever point, pivot, shoot. Except the curtain will be dropped before the pivot is made.