"To me it's the best film I have seen in years from anywhere and after seeing the film I read the book, which, without doubt, is the best New Zealand book I have ever read. [The film] is not exactly the same as the book, but it sticks to the story."
Mr Goodwin said the performances by Kiwi film star Sam Neill and newcomer Julian Dennison were "fantastic".
The ancillary characters made it "very New Zealand", adding quirky touches.
"The film will sell itself," he said. "I'd say this will take as much as Boy if not more."
Waititi's 2010 film Boy became the highest grossing New Zealand film at the box office.
Mr Goodwin suspected Hunt for the Wilderpeople would appeal to an international audience, saying it had been popular at overseas film festivals.
He said it would screen three or four times a day at Regent 3 Cinemas.