New kind of emergency rudder

[Cadence]

Sounds like a pipe dream. But have at it, if you think it will fly.

[s/v Beth]

Could you have it just clamp on the pushpit to keep it cheap?, maybe with an adjustable entry into the water.
I could see something with teliscoping tubes that would form a triangle base attached to the pushpit, then the rudder going down (also on a teliscoping tube) with the rudder attached to it. Doesn't have to be huge, and would fold up and fit in the cockpit locker.