Phill, as I said before, if your intention is to put out plans for home builders, why not simply offer the three options? This would support a developing level of competition amongst builders and sailors which might make the whole catamaran learning process more demonstrative, encompassing, extensive and complete, thus better preparing them for their future in catamaran sailing/racing.
The Sabot has a daggerboard and a blade rudder.
I also like the center fin case for a single fin which could be a fourth option, covering all the bases.
