Hi Pete,
First of all, the word document you linked indirectly claims that a sloop can outpoint a uni-rig. I don't see that out on the race course, in fact I think it's the opposite.
That's my experience too and was surprised by the inference; I used to race a Dart18 single handed under main-only against double handed Dart18s with main and jib. I would always point higher up-wind and (usually) go faster up-wind, and then (usually) go slower down-wind.
Interesting stuff nonetheless...
Regards,
Colin
www.sailwave.com 
