I do not believe that the One Design rules are overly strict in the 30 class. They are necessary to insure even performance at one design events, and lead to some great racing.
The biggest problem has to do with inconsistent regional interpretation of the impact of a One Design configuration on PHRF ratings, which in turn can affect certain aspects of OD performance.
A region that allows variation from OD sailcloth restrictions without impact on rating will potentially advantage boats from that region at OD events. A boat that races primarily under PHRF could maintain a non compliant wardrobe of sails for handicap racing, while maintaining a pristine OD suit of sails to be pulled out once or twice a year.
