By John L. Hill (November 10, 2022, 2:29 PM EST) -- David Sillars of Etobicoke, Ont., travelled to Bracebridge, in Ontario’s cottage country, to visit friends, drink alcohol and smoke cannabis. He was an experienced boater having done white-water canoeing in the past. It didn’t matter that the temperature was three degrees Celsius. The swollen Muskoka River was fast flowing and icy due to the spring runoff in the first week of April 2017....