DMAN144, Great story!
As far as waving...
The reason I got a Harley was so I could wave! I got my first bike in 1983... a little kawasaki 400 or 440 (can't remember, cuz I knew NOTHING about bikes). I was living West Coast, and rode it everyday. Waving became ingrained, even after the time the old dude on the Harley REFUSED to acknowledge that I was also riding a motorcycle!
Flash forward to 2002, I finally bought my Harley (now on the east coast)... and married.
I wave to everyone, unless twoup... then da wife is in charge... I explained the rules:
1. Wave to ALL bikers. ESPECIALLY those that wave FIRST!
2. Wave to ALL little kids... and older people that wave as we go by!
3. Wave to all schoolbuses (not the driver, the kids)
4. Wave to all police and firemen (in vehicles, on bikes, or standing by the road).
5. DO NOT wave to truckers (unless they wave first)... no flirting!
6. DO NOT wave to scooters, vespas, MOPEDS, etc.
7. If someone in a car notices us, then wave (not bike wave, but "regular-people" wave). Or nod.... or give thumbs up back to them, if that is what they did first.
8. Wave at anybody you want to wave at... anytime, and for any reason. Ignore all the rules, and just have fun!
I follow the rules myself. UNLESS for some reason (safety, traffic, rain, stop light, etc.) I can't... and then I try to acknowledge a wave by at least nodding.
and yes, I wave to bike cops... and most wave back... I especially like to wave as I am passing them going the same direction! It lets them know that I saw them, and that I KNOW I am speeding, and to give me a break... cuz I am probably late for work! Sometimes I follow the bike cops on the highway... cuz I can go a little faster, and they seem to enjoy having someone to ride along. I also alert all other drivers (in cages too) that there is a cop ahead.... just as they are driving past me. That suprises most cagers, and they quickly decelerate, then give me a thumbs up! I think of it as building a future relationship (they will look at the next biker they pass, and see if he has any info to pass on!!!). At least they will look for bikers!
Lastly, the wave itself... not quite a "slow down" signal, not quite a "left turn"... kinda between. Mine is also kinda like a 3 finger wave, the thumb and first 2 fingers loose, the last 2 fingers rolled kinda tight. No thumbs up, or pointing-type wave for me.
As far as when, I wave? ALL the time. I wave at night, across a divided highway, from 3 lanes away... if they see it, good, if not, no prob. If someone doesn't wave back (even if I know they saw me), I don't care... I figure they are related to that old grumpy Harley guy in California, those 25 years ago.