Both viper and nacras are using aluminum masts.

The new Nacra is certainly not slow and is a welcome inclusion to the f16 class IMO.

As for the thialand cat regatta, if any of you guys are serious about racing cats and having a good time for minimal expense, then you should book this event in for next year. I've done 2 days if this regatta and had an absolute ball. The thia people are great. The race course is picturesce. Get a boat from AHPC, NACRA or 2B next year and do it. Good times.