Are you sailing with the rudders turned this far all the time on the upwind ?
If so then rake your mast further forward and go faster.
wouter
Yes that is me and what you see happened frequently on every port tack. About every 75 m ... cavitation! I'd have to sheet out and jostle the tiller to relieve the rudder of the cavitation. Felt like I had the "emergency brake" on <img src="http://www.catsailor.com/forums/images/graemlins/confused.gif" alt="" />
Mast rake was at the center of the aft inspection port (the other F16 sloops were just below the upper gudgeon ... thus I thought I was raked forward sufficiently. I didn't want to get too vertical else risk getting too powered up as well as my ability to point.
