When I was there with DOCC in May there certainly were not cones marking the lines. There were a few out but I think they were just braking markers for the most part.
Not sure if that is a "Mosport" think or a TD organizer thing.
Get someone to show you the lines. In a few places they are not obvious. For example, T2 is a left-hander that begins over a blind crest. Oddly, you have to stay way to the left at the entrance (i.e., left of the middle of the track) or you will run off the track on the right You'll see what I mean the first time through.
It helps to crib off someone else for the line through 5 (Moss Corner) as well. The rest of the track is pretty simple.