Mr Bruce took a second surfboard with him to provide flotation for the man in the water.
Mahia policeman Constable Chad Prentice said it was an outstanding effort.
“He did a good job in very trying conditions. It would have been very challenging. He put himself at considerable risk to save a life.”
Other local people made an effort to assist the rescue but Mr Bruce was able to bring the man ashore safely with the second board.
Wairoa police said Search and Rescue was contacted and a rescue helicopter was dispatched.
A Mahia St John ambulance crew also attended.
Const Prentice said it was incredibly lucky Mr Bruce was there. It could have turned out far worse.
“It is again a reminder about water safety — check the conditions and don't take risks.”