The "problem" is that there are two sets of class rules for the Wave.

"Rick's Rules" - the IWCA Rules
"Hobie's Rules" - the IHCA Rules

I won't get into a debate on whose rules take precedence where.

The HAVAMEGA is being run with the IHCA Rules.

Most, if not all of the "IWCA" is concentrated on the East Coast, so most, if not all, of those sailors will be chartering a boat for this event.

Hobie Cat is not allowing any changes to the charter boats, so the use of the IHCA Rules is entirely a moot point.