Hello, I would agree, the hairspray was designed with oversize rudders that take the place of centerboard, so a lee board is not needed.  But for added performance a centered daggerboard in a case that can kick up if needed could be a option to supplement the rudders.  I think for a Harryproa it should be centered and require no attention when shunting.     Happy sailing, George Kuck Chestertown, Md.      On Mon, 8/3/09, jrwells2007 <jrwells2007@yahoo.com.au> wrote: From: jrwells2007 <jrwells2007@yahoo.com.au> Subject: [harryproa] Re:leeboards To: harryproa@yahoogroups.com.au Date: Monday, August 3, 2009, 12:19 PM   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 ps.com.au, Gardner Pomper <gardner@... > wrote: > > 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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