Hi again!
My next sail down from the overdrive 9.7 is an ncx 8.0. Ultrasonic board.
From Remis chart in this thread:
http://www.star-board.com/forum/showthread.php?t=9491
it seems that I need a 52cm R13 fin.
Im thinking either drake or deboichet
Is there a big difference between Drake and Deboichet?