After my ride home last night I had to remount the light on my helmet as it was facing about a yard in front of my tire... If I can't get it right, I'll pick up a nice light with as good of a mounting system as I can talk my wife into (have lost a light due to poor mount), and use two lights on the bar, one flashing and one steady. The flash to be noticed, and the steady so drivers can gauge my speed a little bit better.

Also, I avoided the overpass that was on my route last night and this morning, and I think that has made my commute safer too, but bumpier as well.