I'm adding a rudder to the 21' Hawaiian outrigger I have finished building to avoid having to paddle steer which while traditional is laborious and none too relaxing. I have a hobie wave which I could see a way to adapt a single rudder to the canoe shaped stern. However the Hobie Wave has over 8.5" between the pintles which would complicate installation. Are there any cat rudders with a shorter span between the pintles?

Dan