My rudder on my new used Cat 27 looks bulky and inefficient. The ends are quite bulky, rather than a nice tapper to give the rudder that streamlined look. My Cat 27 is a 75; were the original rudders rather bulky on these boats?Does changing the rudder out enhance performance. I will say the boat is incredibly sensitive to steer when coming in to the home slip at one knot. However going in reverse is an exercise in "gambler tillering" - which way will the boat go?Is a new rudder worth it?