Just reread the whole thread (checking numbers - have at least 8 boats interested so far - thanks, everyone, for your support) and noticed I haven't acknowledged Nauti Buoy and Slim Tim -sorry!
Slim Tim - thanks for those great links and your kind offer to book lunch. We were thinking of The Wheatsheaf but I'll have a chat to Paul & Sue to see what they want to do about lunch. We thought it would be nice if everyone met up in the same pub for lunch but, obviously, can't force people to!!
Nauti Buoy - the course is less than 45 nautical miles and has been designed with smaller/slower RIBs particularly in mind (we have reckoned on the slowest boat averaging around 10 mph, IIRC). Maybe you could bring your boat and then check out conditions before launching? Alternatively, Whiteshoes has generously offered places on his boat.... Hope you do make it anyway.
Signed: Pirate Flora, the staggering drunk (cheers for the pirate name link, Tim)