Why not keep an eye on the monohull/ OD series? I've noticed several local mono- races that are now allowing multihulls. These events usually draw a crowd of nautical types. Some even get lots of press and sponsors. All of this could as a springboard for multihulls. Yes, multis may have to race a different course because of their speeds, but that is a minor logistical issue compared to arranging a whole regatta by yourself.

If fleets show up 'en-masse' to these events (Sarasota Sailing Squadron's Labor Day Regatta springs to mind), mono sailors will get the idea that the multi fleets are alive and well. They'll also get a pretty good look at the performance capabilities of cats.

I recall whizzing through the 420 fleet like a parking lot a few years back at the SSS event, and a good number of the 420 sailors were interested in multihull OD after the event. These were high-school / college aged "kids" with a lot of potential. Where will they go after the 420s?