The Bay of Plenty Regional Council surveyed 259 vessels and occupants at boat ramps across the region from December 26 last year to February 6.
Of the 638 adults and 124 children surveyed, 66 adults and 13 children were not wearing lifejackets.
When asked why, eight people said they did not think there was a risk, five said lifejackets were too expensive and three said they were uncomfortable.
Others said lifejackets were "uncool" or they had confidence in the skipper's abilities.
What do you think?
Should lifejackets be compulsory for everyone who's out on the water, or not?
What do you think needs to be done to change people's attitudes?
Leave a comment below and vote in the poll.