We walked down by the river today and practiced off-leash recall and tested out how Garrus does on game trails, as I won't be able to keep him 100% leashed on portages, and he rocked it. He never strayed more than 10ft from me, recalled so well, and when we went thru the thick undergrowth, kept popping back to see where I was.
We ended this morning's games with exposure to the kayak. While I use a canoe in the Boundary Waters, the idea is the same and the kayak's cockpit is large enough for both of us to sit - he will be in the duffer seat with me on our trip so it's stellar practice until I can borrow my friend's canoe.