Replacement rudder system for P18.2?

anybody out there replaced their P18.2 or P19 rudders? Was thinking hobie 20 or Nacra 18-20...
bigger rudders = more friction = slower
Why do you want to replace them?

Are you frustrated with the system or trying to resolve an issue?
More detail will allow us to help.

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Sheet In!
Bob
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Prindle 18-2 #244 "Wakizashi"
Prindle 16 #3690 "Pegasus" Sold (sigh)
AZ Multihull Fleet 42 member
(Way) Past Commodore of Prindle Fleet 14
Arizona, USA
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Inter rudder blades are definitely smaller than P18.2/19 rudders.

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Rob
OKC
Pile of Nacra parts..
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