One way is to run a nyrod from your rudder horn looping foreward then back to the float rudder. If your rudder horn is not on the same side as your float rudder, add another rudder horn on the opposite side of the rudder using the screws from the original horn. You end up with back to back horns. I have a pic of my wife's LT-40 setup and if I can find it I'll e-mail it to you. Seaplane