Don't worry...
First I would never intentionally do such a thing, I kinda like employment...
Second even if you were to give me the _exact_ time and place a sat was going to be at I doubt I could hit it...
third I doubt anything would happen if I did hit it...
I did come within 4 degrees of the ISS once though... as it was flaring in early morning...(at that distance 4 degrees is a _big_ miss) It was a cool sight to see...