Rules of Tow Boards and scuba in minnesota

[Hydro]

looking at the law, if there is someone in attendance of the watercraft, it doesn't need to be anchored

(h) If at the discretion of the diver it would be safer and more visible, the flag may be displayed on a watercraft. If the flag is displayed on the watercraft, the craft must be at anchor or, if not at anchor, attended by a diver or a person appointed by the diver to tend the craft. Only watercraft displaying an official diver's flag are authorized in the diving area.