Sec. 20. A person operating a motorboat may not tow a water ski, a watersled, an aquaplane, or a similar object, including a person on the waterski, watersled, aquaplane, or similar object, unless:
(1) the motorboat is occupied by at least one (1) other person who is giving the person's entire attention to watching the object or person towed; and
(2) the person operating the boat is giving the person's entire attention to the operation of the boat.