I put up the original post, mostly seems to be a problem of weed and trash collecting on the rudder and not between rudder and the hull. The trash falls off immediately when stopping or paddling backwards and usually if between rudder and hull its more tenacious. The Huki website lists several different rudder shapes and I was wondering if anyone had tried these or any others on the V10. On the same flat water course a mako doesn't seem to pick up much weed/trash but Ill have to stop and clear the Epic several times. Therefore it seems a different rudder would help; I could try to modify a Fenn but thought a more raked design would be better. Would a triangle glued to the hull be of benifit since I don't think weed is trapped between the rudder and hull?

RE:MFB. (what materials can you use?).

I played around with other materials but your best best would be to use a hard plastic. Something like perspex or a pvc type plastic works great. Just make sure the glue you use can bond to both plastic and composite. Any epoxy glue should work just fine. I am not sure the weed guard i used on my V10 would work for eel grass or any really soft weeds but it might push the weeds far enough down the rudder to sheed it just through momentum. It was made for thicker and less flexible weeds (which was my issue) and this guard worked just fine. Even for shark nets it has worked. As long as i have enough momentum the guard just pushes the net downwards enough for the boat to pop over the top.

Hope this helps at all.

I've installed the new Huki 9 inch Weedless rudder on my Huki S1R.  This is the most extreme looking rudder I have ever seen on any surfski or kayak. It is long, narrow and has an aggressive sweep angle. Since I have bumped both my 7 inch and 8 inch rudders on the bottom, I have felt some anxiety while honking along rocky shorelines with this deep draft fin.

I have had this new rudder out twice in the typically weedy conditions about the Connecticut/Rhode Island shoreline.  This raked high aspect foil did the job of shedding all weeds that came its way including grippy patches of floating eel grass that congregates along current lines. When going through a clump of weeds I could feel the boat slow as they wrapped around the blade. But within 2 or 3 more strokes the weeds slipped off and the boat was back up to speed. During both trial paddles, the conditions were relatively flat. I had one 2 mile run in quartering 2 - 3 foot wind-against-the-current waves that allowed some 10 second rides. I also rode a few boat wakes without any difficulty. The rudder performed respectfully in all these conditions.

The tracking and steering power of this rudder falls somewhere in between Huki's 7 inch Weedless and 8 inch Weedless rudders. In surfing conditions I would honestly prefer the crisp responsiveness of the 8 as the new 9 seems to require a little more pedal and a little quicker reaction time to track true on a face. There is more pedal pressure from the 9 while surfing, but it is not overwhelming. Frankly, coming out of racing sailboats, I like some rudder feedback and this new 9 is the first surfski rudder I've tried that pushes back enough to let you feel it working.

In flat water the new 9 resisted hull yawing well while I worked my wing hard. Without some more seat time with a GPS I can not say whether the new 9 is draggier than either my 7 or 8, although I feel like its resistance may increase more rapidly with increased angle of attack. This kinda makes sense as the aggressive rake of this blade would present more of the blades side profile to the flow if it is overpedaled. Any over steering can be felt as stronger resistance through the pedal, so I hope the pedal feedback will help me learn to make smaller but quicker pedal corrections after a little more time with this rudder. 

Cons: Deep Draft and narrow chord increases the chance of damage to rudder and/or boat. Like any weedless rudder, the responsiveness is not as crisp as a standard surfing rudder.

Pros: The new Huki 9" weedless does the job one expects of a rudder AND eliminates the loss of speed and frustration of catching weeds. This weedless rudder actually works, even through sticky eel grass.

I have not noticed significant rudder induced roll with the new Huki 9" weedless. I will try to be more sensitive to this during future outings with this rudder.

I am paddling the Huki S1R which is a more stable 19" beam surfski, so it may not be as sensitive to rudder induced roll as the narrower hulls. I am also comparing this new high aspect blade to Huki's 8" weedless which has more area and probably generates more induced roll forces, despite its shorter length. But frankly I've found the S1R to have increased stability as speed increases, which I have assumed is caused by increased flow over the rudder. If rudder roll were an issue, I would expect the boat to become less stabile at high speeds.

Isn't some rudder induced roll may be a good thing? Wouldn't some roll toward the inside of a turn help keep the paddler's center of gravity balanced over the boat's centrifigal forces while making the turn? Its similar to riding a bike isn't it? Wouldn't the best rudder/boat/paddler combination provide roll forces that compliment the turning radius to help keep the paddler's center of gravity balanced in a turn? 

I've heard people say that some rudders just feel right with some boats. Maybe the good rudders balance the roll and yaw forces better than others. Anyway, it would seem that a variety of rudder choices would be an important consideration when purchasing a surfski.

Its too bad that surfski manufacturers have not developed a standard for rudder shaft and yoke connections so rudders from various manufacturers could be swapped between varying brands of sufskis.