Hadyn Olsen – 18/11/03 “Lake Otamangakau behind Turangi next to the central (North Island) mountains. is renowned for trophy trout.” That was what attracted Hadyn Olsen to join a trout fishing expedition. He shares his story. “Why don’t you join us for opening day?” my brother Nils suggested. “We are off to Otamangakau.” There was…