Cindy picked us up again at 10:30 am, took us by currency exchange on Hill Island where her cabin is, and then on for the boat tour of the Canada/US border.  Dogs tolerated the trip but not sure they would willingly go again.  They river is huge, but some areas wide enough for freighters going into the Great Lakes, other areas like a narrow grassy canal, but lots of personal watercraft everywhere.  Circled the Boldt Castle built in the middle of the river, with a boathouse bigger than most hotels.  Day was sunny and cool on the water but getting quite hot in the sun.  We did brave a dip in the river, pretty chilly with a strong current, but clear water.  Another great dinner by Cindy with our contribution of wine and shrimp.  Great fun to have Cindy as our tour guide and a Boston Whaler boat to see the sights!  Home to KOA at 9pm, packing for our drive to Quebec City