(1)The Authority may display signs within or in the vicinity of a zone giving directions to persons engaging in water skiing or wake boarding, or intending to do so.
(2)An authorised officer may also give such directions as are mentioned in subsection (1), and such directions need not be in writing, and may be given by any reasonable means.
(3)A direction under subsection (1) or (2)—
(a)may prohibit water skiing or wake boarding temporarily, on the whole or any part of a zone, by any person other than participants in any event;
(b)may prohibit water skiing or wake boarding temporarily, on the whole or part of any zone, where in the opinion of the Authority or of an authorised officer such a prohibition is necessary in any emergency;
(c)may be given so as to restrict the numbers of persons engaging in water skiing or wake boarding on the whole or any part of a zone where in the reasonable opinion of the Authority or of an authorised officer this is necessary to prevent congestion or in the interests of safety.