I can just it, all boats become known metaphorically by their musical equivalents. 'Oh, the Carib 37. It is a real BARRY MANILOW'I'll make a wild ass guess:
Are they good? Yes they are very good CCA type boats. Lots of chopper gun construction but thick is good. They were great desingns for the day.
Kind of like THE DAVE CLARK FIVE.
I suspect the little third wheel was simply a friction lock so the tab & rudder worked in unison.Don't recall three concentric wheels. Do remember two. I think in those days there was still some saillors suspect of spade rudders. (like today?) I have heard that the trim tabs did not really work but they were the rage for a while. But the IOR penalized them as an extra movable appendage and most got fixed to avoid the penalty. I have onlly sailed on one boat with a trim tab and it was fixed so I can't report on their value.