I also included the other people in this thread , as the board’s owner , Rod aka ‘Caveman’, has THREE other boards [ his first three boards he ever made ] , also with winged keels / "star fins "…
I was a big McCoy design fan and made a whole lot of these.
On my obligatory North Coast run in the early 80’s I saw him and Skip at Anga. Changed my opinion on how I wanted to surf, they were streaks ahead of what I had seen before that time.