[frempath]

Just as an aside. I don't do the traditional biker wave. I learned to ride off road on 3 wheeled atc's and enduro bikes. As such, one of the early rules is "Keep your hands on the bike all the time." Yes, experience did help hammer it in.
Now its not that I don't wave, I just pivot my left hand up, leaving the heal on the grip, and wave to the left and back.