I think the monohull group has to feel the need. Cats weren't really welcome in my group for many years. Then membership started to drop, so they became more accepting to make up lost revenue.

If they want it to happen, it isn't a problem. Until then you're wasting your time.

My advice is to smoke out the real objection, the angle thing sounds bogus to me.

Specifically, they probably haven't considered two "A" marks. That, along with separate starts should cure any problems.