All shots in this thread were hand-held with a 70-200mm 4L (non-IS). I think I was pretty successful @ 1/60. I can sometimes get away with 1/30 if the cars are headed towards me somewhat while turning or on a bend, but it's still only about 30% successful . My goal for this trip was to work on some difficult panning - from the side @ higher speeds with maximum moition effect, thats why some of the images were @ 1/30.

I have a couple of monopods, but those things tend to just get in my way.