I have a crack that runs "grain-wise" through 1/3 of my rudder just aft of the cheek plate and down. Tell me doctor...Give it to me straight... how long do I have? I just bought this boat and intend to cruise, rather than race, with it. Anyone else have this problem? After all of the startup costs of a (new to me) boat I am loath to put down another $250 for a rudder if this one will last some time. Also, are there any fixes or patches that I can do to extend it's lifespan?