The Wave was introduced in 1995. The IHCA has had class rules for the Wave at least since 2001 (the oldest version of the IHCA Class Rules I have on my computer).
This issue didn't just surface today when the Catsailor came in the mail.
And to be fair to the IHCA, they offered to waive the rules regarding non-stock rudders and sails "if the sails fit within the perimeter of the stock Hobie sail", using the measurement procedure outlined in the IHCA class rules (5 random stock sails used to determine min / max dimensions).
The rudders are kind of a moot point, since only rudders made for the EZ-Loc rudder system (stock in the past couple of years) work with the EZ-Loc system.
Note that RRS 87 requires the permission of the Class Association (IHCA) to change class rules.
