Sec. 24. (a) A person operating a motorboat may not permit an occupant to sit, stand, or lie on the gunwales.
(b) A person operating a motorboat less than twenty-one (21) feet in length may not permit an occupant to sit, stand, or lie on the bow decking of the motorboat, except for any of the following purposes:
(1) Anchoring.
(2) Mooring.
(3) Casting off.
(4) Other necessary purpose.