I'd like to add something about the carrying capacity of the lakes. I could give you the example of Lac des Sables, in Saint-Agathe-des-Monts. This lake has a carrying capacity of about 31 motorboats, but there are currently 650.
Also, the new boats that are coming in are all new, large boats with powerful engines and ballast tanks. Their owners are completely disregarding the depth of the water they're navigating in.