This drilling is good for up the backers....or when there is a lot of friction in the heads and mids and you want a late big backend a long way past the pattern.
I have had it work on strong cored(lower rg) bowling ballser on the above listed patterns. More up the backers can use it on more oil than side releasers).
As an on the side releaser on a pattern with oil this type of drilling does nothing!(it moves too late!)
When put on Assymetricals it is called Assymetrical flip or Flip/D....
REgards,
Luckylefty
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Open the door...see what's possible...and just walk right on through...that's how easy success feels..