After sundays honking conditions (30-40 knts) and watching Mr X spend 40 minutes struggling back to shore.

I advise you replace your UJ every season, it costs a few bucks but it might save you a lot of grief. (The Pryde doco states that UJ's should be replaced after 100 hours)

P.S. The kiters helped out big time and I have posted the full story and a big thank you on behalf of all windsurfers, in the kite forum.