I did tread the boards as an actor in the 70s. Here is a newspaper cutting of a 70s Adelaide Fringe production of Shakespeare's "Twelfth Night" with Director David Allen. During this period, I also joined David's cast in a production of Peter Weiss's "Mockinpott" in Sydney.
Around the same time I acted in productions at Ric Marshall's Cottage Theatre ("Paint Your Wagon"), Bruno Knez's La Mama ("Mother Courage"), and the Elizabeth Shedley Theatre ("Fiddler on the Roof").
Later (in the 80s), I acted in Victor Harbor Choral and Arts Society productions. (See slideshow below.)