Reading these threads RIBing with friends sounds even better!
I would be very interested in going on some of the BIBOA cruises, possibly sharing a lift on a bigger RIB if mines a bit small for the trip!!
I've had a look at the BIBOA web site, but there's no mention on costs or how to join!
(I could send a mail to one of the addresses given, but I expect other people reading this forum would be interested!)