Hi
Have you tried Qcean Quay down in Southampton, Belvidere Road.
We are mainly 'Ribeyes' and there are about 18 boats moored there, all various sizes.
RIB Shack also operate from there, and the guy that runs it, would be more than happy to show you what they have to offer - quarter ownership.
As said, we need more like minded people to get together in Southampton, as I for one, have kids that are fast growing up, and don't like to be seen with the 'grey haired old boy' any more.