Emergency steering hole in rodder for rope?
Rudders such as those from Island Packet have holes drilled on the aft upper corner specifically for that reason. I can suggest that to provide steering redundancy, you use a linear drive auto pilot to use if you have a steering gear failure. The tiller arm for the autopilot would be independant of your steering cables and thus could be operated electronically without an operational steering pedestal. This wouldn''t help in an emergency where you have both a broken steering system AND no electricity but situations such as that rarely occur in anything short of a rollover( or if Murphy''s Law is working overtime).