I've kayaked with my small and medium sized dogs (15lbs and 30lbs) in a 14ft tandem kayak. I'd say the hardest thing is keeping them still with all the activity going on around you. Granted I am not in an inflatable kayak but I noticed their nails really dig into the kayak for support (it's kind of like dogs in cars, they don't like the movement and move around in the backseat from window to window). I would recommend keeping their nails short but also if it's inflatable, keeping them relaxed because that excitement might get a hole in the kayak. You could also put a towel down where the dog might have their paws on. I hope this helps!