I still think it only applies to when you are landing. I.e. How are they going to deny you entry if you float across an imaginary line in the middle of the river? And, if you are on the water and do not touch land or anchor, you do not have to call. Will see what happens this weekend, i could be proven wrong 😊. I thought i was wrong once but i was mistaken, as they say, eh? The other issue is, it depends on what agency you talk to in Canada, like here in the states, there are inconsistencies.