Hi Steve,
As you note, both hook and ball systems have been around for years... So... I assume that these system are not sufficient for ISAF. Otherwise, Why would they have put forth the rule.
Perhaps, they are only addressing the continuous systems that have you permantly attached to the boat (as noted above) However, if that were the case, you would think they would have been explicit in their rule making.
So, my current take is that nobody really knows what's legal in 06 and I wonder how sailors will be informed of what's legal or not!
As a race organizer like yoursef and looking forward .. I would refuse to write a Sailing Instruction that undercut this rule... God forbid an accident related to harnesses occur on your watch.
Indeed... I wonder if the SI, "... protests related ro rule 40.2 will not be heard " would be an acceptable way out of the fog. I have seen SI's which state that protests concerning the US coast guard requirment for a throwable will not be heard. I wonder if that has ever caused trouble?
I know its a real PIA to carry a throwable for the Coast Guard for our distance races!
Thanks for yours and anyone elses thoughts