After a couple of close calls, I've decided to get a helmet camera. No, I know not every ride is going to be an all-action thriller but when you have a van speeding straight at you on a one-car-width bridge and you have to pretty much dive out the way it changes your thinking. I think the Contour GPS will do me but I'm wondering if all that's in the box will allow me to mount it to my vented helmet. Do I need any extra kit or is what's in the box good enough? Can anyone else offer any advice on the product?