Maximum

If it makes you feel any better trout are not as easily stressed by cold water as the warmer water fish. I'll bet you'll be fine.

As far as the herons I wouldn't advertise your intentions unless Canada treats them differently then we do in the states. And yes, I know others do the same on here but it's not wise. Just some friendly advice and keep us posted. ;\)

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.