Hey Mark,
off topic, but could you elaborate on your copper/epoxy bottom paint comment? Are you talking about using a permanent epoxy/copper coat (like http://www.coppercoat.com/)? What brand are you thinking about? I've been having trouble finding much reliable info on it, so anything you could share would be appreciated.
I'm about decided that I'm going to use it, in some form. I figure if it doesn't work well, it'll be a good back up for an ablative anti fouling paint.
-Jeff