Which Mike?

Yes, they can be repaired. Some buds & I had an old Nauti that we bent the rudder shaft (stump) & had straightened & then the next season (same stump) sheared the rudder off at the hull & had that one brazed back together. Both held up fine.

This time, I had to cut my rudder shaft to get the tiller arm off (well, after the fact didn't really have to - but oops too late). I did pick up a whole new rudder assembly so I could update a 20 year old seal and rudder design.