I'm not sure why you are going to such mechanical means of allowing the rudder to flip up,
Come to Zandvoort one time and you'll know.
Besides your are also overlooking the fact that I what to be able to adjust the trim of the foils for different conditions/courses. You can't do the latter with the fixed foils.
Your right, Phill should get the credit, Thanks
What a nonsense, who says Phill was first ? Besides his design was strikingly vague. The real designing is hardly ever in the concept but rather in getting the details right. One of those problems was to find a simple way to fit the foils to the rudder so it can turn about its axis. Simply bolting it through won't work.
Now I'm not claiming to have done something special here, but I'm also not accepting any claims by others who wrote statements like:"if you use a rod in some way, so that it adjusts the angle somehow then it could be designed such that it would be adjustable if you find a way to somehow control it from the top of the rudder board."
YEAH DUHHH ! My granny could have thought that one up.
Wouter