No worries at all Nick. I think the toughest thing about this topic is trying to un-do the misimformation that many of us have been repeatedly exposed to, and tend to accept as fact.
Your advice re: not leaving a Hobie in the water is bang-on...in my opinion. Both from a risk management standpoint regarding water-related problems, and from the structural standpoint involving the stresses of mooring any sailboat - especially a catamaran. It seems to me that Cats tend to have relatively poor weather-vaning tendancies while at anchor, and may require long bridles and/or excessively long anchor scope to compensate for this.
Cheers,
Dave