Oh no Jimi, we are not going down that path again! Which is faster, sloop or uni was discussed to death earlier this year. Search for the old thread, I think you will find what you want and more in it. Was quite nasty for a while. <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />
The slot effect wont stay down, no matter how many stakes you put trough its heart. Since the 70s the slot effect has been declared a myth. Arvel Gentry wrote some very clarifying articles on the subject.
http://www.arvelgentry.com/magaz/Another_Look_at_Slot_Effect.pdfhttp://www.arvelgentry.com/magaz/More_on_the_Slot_Effect.pdfThe jib adds tip vortex and form drag. We have very little scientific data on just how much. We also have very little scientific data on L/D ratios between unirigs and sloops in different sizes.
I am happy to sail both types, both uni and sloop. For distance racing I prefer a sloop, but the uni offers simplicity.
