From the report:
Between November 1999 and January 2009, TC’s Aviation Enforcement Section initiated 20 actions in the Pacific Region pertaining to contraventions of regulations concerning VFR Minimum Visual Meteorological Conditions. 15 Of these, no punitive actions resulted.
...
Identifying pilots and operators that fly below VFR minima is difficult unless a customer reports an issue or a TC inspector is present when the violation occurs.