Center of the pocket, one side viewed
from underneath
Slingmoore's 2015 All Blacks are entering production, here's one side of the back of the pocket receiving its ever-so-subtle pinch for the perfectly rounded pocket.  The funny thing is that I have tried making metrics for exactly where these holes should go and the results were disastrous.  In the end, the eye-balled holes were better.  I can't explain this beyond sometimes experience is better than anything.