Not a revolutionary option, Mike. I developed a skulling fin on my rudder in '07, no electricity needed.  Flipping the rudder is more difficult and makes directional control somewhat sloppy.Art

Sent from Yahoo Mail on Android 
 
  On Sat, Dec 14, 2019 at 6:56 PM, Rick Lange<sloopblueheron at gmail.com> wrote:   Mike,

The R22 already has this feature, called sculling the rudder.  Kick up the
rudder blade and swing it back and forth with the tiller.  Although not
electric, it gives you a good cardio instead.

Regards,

Rick Lange

On Sat, Dec 14, 2019 at 6:15 PM Michael D. Weisner <mweisner at ebsmed.com>
wrote:

> I just read a story about an electric propulsion system for boats based on
> the way a fish fin moves:
>
> https://plugboats.com/amazing-new-electric-boat-motor-based-on-fish-fins/
>
>
>
> OK Stan, I will expect to see one fitted in a Rhodes 22 at the Annapolis US
> Sailboat 2020 show.
>
>
>
> Mike
>
> s/v Wind Lass ('91)
>
> Nissequogue River, NY
>
>
>
>
>
>