re: Rudder hold down
The cable should be tied to a line that can be cleated to the cleat on the tiller. It will hold the rudder down when you start making speed, otherwise it will tend to cant upward and give you a dramatic increase in tiller resistance and "weather helm". The pull up line is for just what it says, to lift the rudder or cleat it up out of the way when you are in shallow water or are trailering the boat.