Sam,
You do not race a 20ft boat, why did you post?
Your comment that "ISAF nor any national authority, regulates, controls, approves or even stores the various Class rules."

Is uninformed and just plain false.

Your other comment.
"I suggest you review the previous posts on this forum and maybe save yourself alot of wasted time and energy"

I do not know what to say, if you look back through the posts yourself you will see that I have been posting here for a few years.

What I am trying to do is to get F20 off ground zero, because I do race a 20ft cat. If you have no support to offer then please resist your urge to type.