Well, I've been making some keel measurements and looking at the previous botched fairing job/s. It appears that the keel is attempting to be a NACA 64A-009 series foil...maybe a little thicker. This is based on making some measurements and plotting against known keel profiles in excel. I also used a neat shareware program called Profili that does some neat plotting and has a large library of standard profiles. The root of the keel 
(top 1/8) is clearly fatter than the rest and way out of profile...the rest is not half bad. In investiagting if the root could be thinned to match profile, I started drilling test holes down to the lead...yep, most can be thinned out.....then I found the interesting part. The fairing in the picture I had thought was just glass left over from removal of some of the chord. It is filled with foam core (Klegecell), the same stuff the rest of the boat is made of....I probed it and it appears to be the hull core and goes straight to the inner skin. Ow! now to figure out how to deal with that...
(top 1/8) is clearly fatter than the rest and way out of profile...the rest is not half bad. In investiagting if the root could be thinned to match profile, I started drilling test holes down to the lead...yep, most can be thinned out.....then I found the interesting part. The fairing in the picture I had thought was just glass left over from removal of some of the chord. It is filled with foam core (Klegecell), the same stuff the rest of the boat is made of....I probed it and it appears to be the hull core and goes straight to the inner skin. Ow! now to figure out how to deal with that...
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