Yep, 1983 is indeed many moons ago, but I do try to keep current.
http://msf-usa.org/downloads/mom_v16_GS_low_res.pdf
These guys dont mention anywhere I can see that hand indications of turns should be used as much as possible. Where is it they teach that? I know quite often, individual
instructors will pass along a personal preference as the Word from On High, thats why I ask. I use the motion thing all the time, SMIDSY is one of my biggest concerns, thats why I waggle my front end at folks who are in any position to cross my path. I'll yank a bulb here in the next few days and see, I havent had a bad bulb since it was new in 2009, so I was just assuming that it would give me the fast blink. Bobs Beemer might not be the best case to draw universal conclusions from.