Criminal Code of Canada (R.S.C., 1985, c. C-46)
439. (1) Every one who makes fast a vessel or boat to a signal, buoy or other sea-mark that is used for purposes of navigation is guilty of an offence punishable on summary conviction.
(2) Every one who wilfully alters, removes or conceals a signal, buoy or other sea-mark that is used for purposes of navigation is guilty of an indictable offence and liable to imprisonment for a term not exceeding ten years.
250. (1) Every one who operates a vessel while towing a person on any water skis, surf-board, water sled or other object, when there is not on board such vessel another responsible person keeping watch on the person being towed, is guilty of an offence punishable on summary conviction.
(2) Every one who operates a vessel while towing a person on any water skis, surf-board, water sled or other object during the period from one hour after sunset to sunrise is guilty of an offence punishable on summary conviction.
787. (1) Unless otherwise provided by law, everyone who is convicted of an offence punishable on summary conviction is liable to a fine of not more than five thousand dollars or to a term of imprisonment not exceeding six months or to both.
(Also, a criminal conviction may prevent you from crossing the border in the future)