You mean, like the lift/drag & stall characteristics of foils?

From your earlier statements, it seems likely that you know
very little about the subject.



Mys Terry wrote:
It opnly seems that way to you because you don't know anything about the
subject.


Is that why you've so clearly explained the characteristics
of the various foils under discussion, and provided links
for anybody with an interest in further info?

http://www.vacantisw.com/foildesign.htm



.... The foil he was planning to use would have slowed him down quite
a bit.

And you base this on... what, exactly?



Knowing what I'm talking about. The foil he was going to use was not even close
to suitable.


OK, then you should go here
http://www.boatdesign.net/forums/showthread.php?t=937
and tell these guys that they are slowing their boats down
with "unsuitable" rudder foil sections.

BTW do you even know what an IC or a Cherub is?

DSK