someone mentioned changing the sylt of the rudder system to hobie. I've used hobie, prindle and Nacra rudder system. I'm not sure about this is possible cause I'm not starting at the two systems next too each other, but the Nacra system seems to me to be the best design, as far as ease of use. I seems that I might not be too hard to replace the prindle systme with the nacra system, they kick up better, and are easier to pull dull. Again, sorry if there is some blatently obvious reason that this wouldn't work, but none of my freinds have a rpndle anymore, and I can't look at one.