"They won't be able to hide it. It's a fairly particular boat, there's not a lot of them in the country."
The Whangarei-based private investigator was also contacting boating clubs and marinas around the country to get the word out. His company would monitor ads, for years if necessary, in case anyone tried to sell items from the boat.
He urged anyone who had seen the boat, or had any information about its disappearance, to contact him on (09) 436 5540 or 021 237 3819.
Constable Mike Gorrie, of Russell police, said the boat and trailer were taken from a secluded property accessed by a long drive. It was possible the thief or thieves were familiar with the area.
He urged anyone with information about the boat's whereabouts or the thieves to call the Russell station on (09) 403 9090 or Crimestoppers anonymously on 0800 555 111.