Ahhhhh Perfect. I'll look into that. Sounds like that would work perfectly for the controllers I most want to do this with.
However, I also have something that I think might be a good idea which is a collection of stimulus controllers but also come concerns that allow someone to suggest changes to the attributes of a model (they are included into) and for another to accept or reject the changes depending on their 'expert' consideration. Maybe that is something of a special case.
Just looked at episode 206... that will do me well. I suppose if I need a gem, for concerns etc, I can make it so you include the bits needed to get the javascript. Do something like add the appropriate lines to the /app/javascript/packs/application.js file etc.
I've resisted going to Turbo so far (not that I see it as bad but development timescales to convert projects etc) but it really seems to many situations easily now. Now to choose the first project...