Klaus sent this link along with the comment that it would fit in well with the discussion on rudder systems. At first I didn't see the relationship, but after digging around a little, found it. Go to the "Products" page and you see different rudder types that they produce... each has various 3-D models and animations that show how it works and moves... a good resource for looking at some different rudder designs (including Kort nozzles)... Becker is geared toward a little larger craft than we normally deal with, but...