"I am not sure why you feel the need to dig up old threads ...
Hey I am new here - they are not old to me. And your posts are hard to miss - I have to wonder when you find time to work or to sail....
As far as "Capsize Screen Formula and the Motion Comfort" is concerned we are not so far apart. I said "it is widely acknowledged that they are to be taken with a grain of salt
". And a LOT of respected yacht designers feel it is a useful tool.
Yes, there will always be examples that will not fall into easy classification of full keel fin keel etc. Thats life - it is human nature to want to classify/explain everything.
And just because something is in writing/taught/on the INTERNET does not automatically make it correct.
Also as just stated in another post we are just going to have to agree to disagree.