We are assuming he stored the boat at home. Could it have been stored at a marina? Left in the water for the season? Pickering had a marina when I was a kid. I think Whitby has one too. Not sure about Oshawa but Bowmanville I think has one as well. He could have taken the boat saynin May and dropped it in the lake and then paid to dock it then just gone via public transit to the dock with a bag to get to the boat then drive it out to drop Rori in the lake. .
The boat was tarpped and stored behind a wood fence at the back of the driveway.