You lost your credibility when you stated that PHRF works. PHRF is the most inconsistent system out there.

The same boat rates differently region to region - even one-design boats like M24's or J22's.

There is no formula used to derive the rating - it's a guestimation by committee on how that boat will compete within a given fleet.

A boat that is perceived to win too often will have their rating lowered.

A boat that doesn't win will typically have their rating raised.