Todd... you are missing the point by over interpreting the word "unwelcome"

The facts are..some of the existing fleets of catamarans are getting old and their OD class are in trouble.

Hobie 18... no longer made in the USA. 0 boats at north east championships... aka Madcatter
Hobie 17 .... no longer made ... 0 boats at north east championships.
Nacra 20.... existing fleet is getting older and few new boats are being added to the racing fleet.

OD Fleets that have died in the last several years are
Nacra 6.0's, 5.8's and 5.5 uni's... Prindles and Mysteres.

What do ALL OF THESE owners have in common...
My answer... They own good old boats and are not coming to regattas! AND ... they are probably not going to buy into a different class of boat when their old one is perfectly fine.

If you ask the question... What the hell is missing... I think you get much further.. then asking what is "unwelcome" about our regattas.