I agree that people shouldn't be out there alone, but the OPP gave a statement on the news advising people not to go on the water if not necessary. Not that it was in any way illegal. People can be ticketed for using closed launches, marinas and parking lots. I can't find any other restrictions online about it. There are even some boat launches open to the public. Kawartha lakes is advertising that they'll be opening tomorrow. And this is from the town of Innisfil website:
"The
COVID-19 Emergency Measures By-Law creates offences for use of the Town’s water access points and boat launches for launching trailered watercraft. Staff are working on solutions that may allow safe access at a later date through a reservation system.
Does that mean nobody is allowed on the lake?
Lake Simcoe has not been shut down. Residents who are able to access the lake privately will still be able to travel the lake"
I'd contact the OPP again for clarification. There are a few articles out there about police giving incorrect tickets or advice because of confusion about the situation.