The Waikato Regional Council's new harbourmaster is urging boaties to be vigilant, with visitor numbers expected to spike this summer.
The warning comes following the eagerly anticipated opening of the Auckland border and as the council gears up for its routine increase in patrols over the peak season.
Regional Harbourmaster Chris Bredenbeck said: "It's been a funny old year, so we're excited to see locals and visitors alike getting back to it and having fun on the water this summer.
"But we're already seeing higher than usual activity as people blow off the cobwebs, and we're expecting it to get a lot busier still. Anecdotally it looks like there'll be more vessels – understandably there's enormous demand for people to do things locally, and we've been told new jet skis coming in from overseas are already pre-sold.