Tell them to read Bethwait's book on sailing - he probably knows more about high-speed planing monohulls than anyone else in the world. He designed several of the modern skiff designs.
Also, here's the address of an article by
him.
http://www.geocities.com/f16hpclass/speaking_good_boat.htmlThe newer light-weight cats certainly feel like they plane, though.
Michael Coffman
T4.9#32