Matt, I'm sure you can hunt on crown land but not sure what the regulations are in Ontario. If I was you, I'd phone the MNR and find out exactly where you're aloud to hunt.
Out here in Quebec, we're alound hunting where there's crown land but from experience would not even venture onto any of them.... TOO DANGEROUS..... TOO MANY HUNTERS around. That is why I hunt in ZEC. In our spot no other hunters around.
Hope this helps
Leechman