This is one track where you want to be fully alert.
Well, you should do that on all the tracks anyway :), but Mosport International Raceway is a track where I have found that you should respect every single corner and you should engage every single one with confidence especially when pushing the limits.
I love the elevation changes and its downhill fast corners.
Here is for your enjoyment 2 videos I have taken of the instructor and myself.
I recommend this school to anyone who wants to experience this great track!