The F12 looks like fun class, I might be interested in building one if you allow more "Bladish" hull design in the rules. I have built my Blade following the plans and after this experience it should be fun to try on my own design or experiment more on some other design (if wave piercing design is available).

Wife has to agree to take F12 catamaran instead of kayak that I promised to build her next winter though <img src="http://www.catsailor.com/forums/images/graemlins/wink.gif" alt="" />

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Valtteri