I was told an easy way to distinguish yourself is to wave with one finger; now, rather than describing the bike, observers can simple ask if you were the one finger waver
Silly, but correct, in a remote way: intra cockpit communication for planes flying formation, the number "6" is the index finger pointed horizontally. (1 thru 5 are vertical, 6-10 are horizontal to the path of travel)
So, index finger at the horizontal it is!
My girls: Isleen - 2014 F6BD Saorla - 1995 FLSTN Heritage Special
"Politeness, n: The most acceptable hypocrisy." Ambrose Bierce