A Better Rudder (for Inflatable Kayak)

Well, better than my previous rudder (http://www.thingiverse.com/thing:806945). Rotating the worm gear both adjusts the rudder angle and also tilts the rudder fore and aft. For normal steering angles (+/-20 degrees) the tilting does not affect the steering. If you crank rudder all the way over to 120 degrees, though, you can lift the rudder clean out of the water. The whole assembly straps to the back deck of the kayak (in this case, my Advanced Elements Convertible) and breaks down easily for transport. See how it works here: https://youtu.be/B3C8raQL2_4