Hey Jiggsy,
T.O. harbour is part of Div. 20, amigo
Here it is from the MNR regs:
WATERBODY EXCEPTION DETAILS
All waters of Zone 20, including
the Niagara River (downstream of
Niagara Falls). The following waters
are excluded: Jordan Harbour,
Hamilton Harbour, Toronto Harbour,
Frenchman's Bay, Murray Canal,
Presqu'ile Bay, Weller's Bay, East
Lake, West Lake, the Bay of Quinte
(the waters lying west of the Glenora
Ferry), the St. Lawrence River
(waters lying east of Bishops Point
and the easternmost tips of Howe
and Wolfe islands), and all other
tributaries to Lake Ontario.
Two lines may be used when angling
from a boat in open water.
Thanks!