Re: Loss of Steering
Drop a bucket on a line on the side you want to turn towards. You'll want to secure the bitter end on a winch though as you'd be surprised how much pull it will have.
If you intend that as a method, try it sometime, just lock your rudder and go. Try it while sailing slow at first.
For minor changes either use sail trim, or drop a warp (line) off - same as the bucket, less drag.
Lessons learned are opportunities earned.