Proas- the original multihulls- are rather rare these days. Which is really quite a shame.

A proa, for the uninitiated, is a laterally asymmetrical multihull: one hull is smaller than the other. Proas, at least in the strict definition, are also double-ended, switching bow for stern in a manoeuvre called a "shunt" when ordinary sailboats would tack. There are, of course, proas that tack in the conventional manner, although these are more commonly called tacking outriggers.

EDIT 6-Aug-2010: These designs are now available!

A couple of new designs are almost ready to leave my drawing board. The Almaguin 400 and 500 are versatile 4- and 5-metre utility runabouts, designed with cottagers, anglers and day trippers in mind.