Rob,
 
Now you are getting into the technical aspect of the centerboard and how it  
actually works. I have the standard (old style) board and can report that I  
prefer it all the way down. Now, on a totally downwind run, I will raise it all 
 the way if speed is essential. If I'm going for comfort I will leave it 
down. It  will help to stabilize the hull and keep it from pitch poling, but it 
will  create drag reducing hull speed.
Another interesting thought I had a few years ago was to change the shape  
and length of the rudder. One of my biggest frustrations is the safety factor  
Sir Stanley built into the Rhodes. About the time the rudder comes out of the  
water and the hull rounds up is just about the time I'm really beginning to 
have  fun and then I lose control. Stan sent me an interesting email with some  
drawings and suggestions, but I have never found the time to extend mine.  
Perhaps some day.
 
Rummy
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