I have a love / hate relationship with Tugnuts... I love it for all the information you can gather on so many topics from a wealth of knowledgeable boaters with first-hand experiences and willing to share them... I hate this forum because it's my time sink, just the reason I have avoided Facebook!
So, from the "More Observations - R23" post, there was a link to a YouTube video "back and fill", which had a single screw maneuvering b&f video, which showed a simple, gravity style rudder position indicator by Davis that mounts to the center of the steering wheel. Available from Amazon Prime for $25 USD.
I have GOT to go mow the lawn! Today!
Bob & Kim
The Doghouse 2