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''Over Christmas and New Year we had a couple of perfect days and everybody was amazed at the number of boats out.
''Summer is still coming, so there will be another round.''
He said there were probably more boats on the lake, including new owners, this season which meant his educational role was ''very active''.
He had been trying to make contact with as many users as possible, either on the lake or at boat ramps.
One of the reasons for the lake's high use may be its size and the many beaches and boat ramps, he said.
''Lake Dunstan has beach around a huge part of its perimeter and people can make use of most of it.''
Although legislation behind bylaws concerning the lake had been tightened, making bylaws easier to enforce, no fines were issued.
''But ... a lot of warnings [were] given out, probably about the same as last year. We've still never had to speak to the same person twice.''
Mr Hitchcock said the lake temperature was about 19deg but that would rise to more than 20deg.