Rolf
This is getting way way away from the original thread, that of Bitsa's build. Perhaps you may want to start a new thread on this very subject as then you may get a few more coming into the frame to discuss.
It will be very un PC as the Uni v Dual being even is what our class is based on. From real world data that is now no longer the case in my view and that is supported by the disintegation of the fleet of F16 single handers at my club, which probably was the biggest in Europe at the time. Some have retired, most just got tired of coming last in the handicap fleet racing which we predominately have.
At some time this subject is going to have to be discussed and not on the F16 web forum which is closed to those who do not have a F16 boat.