I've never managed to duplicate seeing the visual that he sees between CTE and Edge to c. I can guess it and get pretty close most of the time, but I know I'm guessing it, not seeing it.
And even though Gerald, a great player btw, sees it, I wonder about the requirement of repeatability of moving exactly from the visual to 1/2 tip off center and the length of bridge required.
I can understand these can be repeated maintaining reasonable accuracy (say a pocket width over that distance), so his center pocket shooting is very impressive, as his stroke and bridge show no sign of intuitive adjustment. I'm sure Gerald would quickly recognize if he was making adjustments during the pivot or stroke, and I'm pretty sure he'd never lie about it.
So my mind gap comes down to how he perceives the visual and takes that to 1/2 tip offset. And, I'm still not convinced any bridge length will do. Would be interesting to hear his thoughts on how bridge length affects his method.
btw: Thanks for the great video link. I've seen it before and was quite impressed by it.