Once in the canoe, the dog should remain quiet.
Yes, the dog
should do a lot of things. I'm not a fan of condemning based on breed, but I do think there's something to genetics, breed, and behavior, at least generally speaking. Looks like you have a German shepherd or similar, known for trainability (and a nice looking dog!). I have a hound mix - known for following their nose above all else. I've been training him for 6 yrs, and he listens well and responds, but he needs to continually be reminded. In the woods, he will find every deer trail and start down it. I tell him no, and he immediately stops following
that trail, but as soon as he finds the next, the nose wins again. In the canoe, he sits whenever I tell him, but as soon as something new is in the wind, his rear end magically levitates and his nose heads where it heads - I don't think he's even conscious of it.
I used the word rowdy, but these days that's probably only fair when a beaver or loon pops up near the canoe. He is quiet, he just can't sit still. He sits, he stands, he turns, he sits, he turns, he stands.... all pretty calm and we've gotten good at balancing together - he doesn't lean out over the rail like when he was young (fell out twice, dipped the rail and almost dumped me twice, but that was years ago). But he doesn't seem capable of sitting still until he's inside the house or car where the smells of the woods subside.
@Jatfomike , your 100-pounder in a Phoenix with you gives me hope!