This past summer several of us took to the St Croix River for some canoeing/kayaking. We got a really good deal on the cost and it was only about $20 per person, with two in a canoe or $40 for a kayak rental. Hopefully the same discount price will apply again.
We'll stop and gather at the sandbar just above the bridge, which is the Osceola Bridge and our final destination. Of course if people want to paddle down to William O'Brien people can do that. They just have to get there before 5pm to catch that shuttle or before 7pm to catch the last shuttle.