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Faster: are you confusing spade rudders with a nice foil shape to the huge glass/wood/metal sheets some of us have hanging off the end of our keels? I think those are two different universes! The only high volume full keel production boats I know of (Island Packets and some Pacific Seacraft) have a squared off barndoor. I think the only reason designs like the BCC have a nice round rudder is purely aesthetics. Not that I am at all an NA or anything.. This subject has come up a lot with Rawson owners. A whole lot of pre 1977 owners express interest in converting their round rudders to the modern square ones, and a bunch have done just that, even some spade conversions! Never heard of anyone going the other way. Would be good to hear the informed answer to this question. Designers & Naval Architechs???
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