This has turned out to be a very interesting discussion as it brings up the question whether a sloop or uni is faster. I think we could all agree that round the cans a sloop is faster, whereas in distance racing the other way around.

Some of you say that a jib adds area for a lower center of pressure, which in turn gives less moment. This is a good thing. However, a jib also adds tip vortex, probably the single biggest drag factor of the entire sail. This in turn gives the main (the engine) dirty air. Shouldn't this be a part of the equation? Also, the infamous slot-effect, could some of you give a proper explanation of what it really is? And please don't be afraid to get theoritical, some of us here actually enjoy a challenge every now and then..:)