All the boats I know of that have faired their keels ( including mine) had a shallow depth (section 5 is off the keel). I think all left their keels short-it is too hard to make a durable shoe that won't fall off or be damaged when the boat is on the hard or scrapes bottom. If anyone has extended the keel depth, I'd love to hear how they did it. It seems to me that adding lead for the shoe to match the templated shape could really help righting moment and should be class legal...