the Deaf Surfer/Shaper was Sid Wilmont, ran a surf shop in Port Eliot, later.."Southern Surf Center" I think.
he did some Sailboards but don't think he ever sailed.
the other shaper you may be looking for, hung out with Wayne Dale way back in the surf days.
He shaped a few sailboards and rode them, can't think of his name, only signed his boards with his nick name
Weasel or something similar to that.

also Greg Frost, "Spirit Filled" sailboard and surfboards.

hope that helps
David