Very good float training is available at Orillia, only an hour and a half north of Toronto, and lots to do. Spectacular colours this time of year. By the mid to end of October, float training is mostly over in this part of the word. It's just miserable taking off from the water, in air which is below freezing, and finding very quicly that a splashed airplane (whidshield) is now an iced over windshield. The farther north you are, the sooner float training ends.
Contact Jeff here:
Lake Country Airways: floatplane training, endorsements, float charters and rentals He's a great guy with a wealth of experience...
This link of the Transport Canada website, will get you close to the information you're looking for:
Flight Crew Licensing Have fun, it really is!
Pilot DAR