If I remember correctly, a harryproa can be sailed with only the stern over-sized rudder so the usual balancing of the CE and the CLR is not particularly applicable.
Rob or someone will correct me but I think that the lack of leeboards or centreplates is to avoid the cost and complication of a third foil. Bear in mind that there is a long hull with considerable lateral resistance.
--- In harryproa@yahoogrou
>
> Hi,
> Ok, I like the explanation, but I am still having problems finding it. On a
> harryproa, I know that the CE of the sails is aft of the mast, because it is
> a rotating rig. The center of lateral resistance should be right at the
> mast, since the hulls are symmetrical. So, if I put the leeboard next to the
> mast, right in the center, that should satisfy.
>
> So, I am still confused, since that is apparently the wrong answer. I hate
> it when I look in the back of the book for the answer and still can't work
> it out <grin>
>
> - Gardner
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