Originally Posted by
bikeideas
I appreciate your comments, gcottay. Thank you for Elegant.
If the temple piece is kept taut, its pretty darn steady, if the arm happens to touch the frame (as with my Oakley XXs) then it is solid. If you "post" when glancing back, the vibration is minimal... employ a sweeping motion (or a "no" nod) when doing so, it smooths out the vibration. I find that I don't need to see the car clearly, just see it. I also still make eye contact with the driver (the mirror helps me time it) and I look back often like non-mirror users.
Don't see the need for any head-turning look-backs if a functional mirror is being used.
Currently using a helmet visor-mounted Take a Look - it and various previous mirrors have given me all the info I've needed about what's behind me.
Looking back over the shoulder isn't an option for me, anyway, as most of my riding is on a recumbent or as the captain on a tandem.