I like to wave, but it must be done in a "cool" manner: Proper cool wave is to drop the left hand from the grip, now lower than the grip and extend your index finger, or your index finger and the next finger (important not to extend the next finger by itself). But hey, let's just get it out in the open: Most Harley riders are Dicks. They're almost all really old, don't wave, mostly because they're afraid to take one hand off the handlebars. They're also really shitty riders, mostly because they only ride on Sundays when it's not raining and they're used to being encumbered by some fat cow who's squirming around on the back. There: I said it and I'm glad!