On Apr 18, 3:26*pm, "Matt Herron Jr." wrote:

Heavy gauge PVC pipe with elbows and PVC glue and covered with water
pipe insulator. *Tie two pipes together with a bit of rope at the back
through two holes. *$20?

That would be my preference. It's light and cheap, and is pretty sure
to do the job at hand. Remember that you're not trying to completely
immobilize the rudder, you're just trying to prevent it from hammering
against its stops.

Thanks, Bob K.