I've never paddled a kayak with a rudder, but would like to consider the option of one on my sabalo. Obviously they create drag, I've seen 10% decrease in speed mentioned as an estimate on the web. So first question... is this the case?
The sabalo effectively has a skeg at the transom - has anyone tried making a skeg-hung rudder for it? This could reduce the additional drag to near zero by blending the rudder into the hull rather than have a separate rudder in the water. This is what I mean:
Do you know if it make things any more slippery? I'll probably make my own rudder either way, but if there's not much gain to a skeg-hung then i'll stick to a conventional job.