I would more than happily help your friend out (but in Southampton), we have advanced courses running most weeks at the moment. We could maybe pick him up from the Ferry this sideif required. However if he is based on the IOW it makes sense to look closer to home.
Whatever has been said above Tim Griffin runs a very reputable centre in Cowes, he is running better RIBs than most other RYA centres I have come across (mainland or IOW) and his boats are new. He knows what he is doing and has a good reputation for all levels of instruction. He teaches a lot of his courses himself and uses a select couple of instructors for the rest.
Failing that Jimbo will organise something for you in Pompey, he also knows his stuff and has good kit.