Assuming you have the fence between you and the track...
Do you know which circuit they are using?
There arent many places either way.
If GP, the first part of the complex just past Bridge is good. If the National or International circuits the corner after Stowe is good.
Everywhere else the fences effectively prohibit shooting.
If you are inside the fence, Im gonna mug you for your pass...
Im going tomorrow, and I believe they are using the GP circuit.