unfortunately i think there is simply no substitute for a hemet mounted mirror. Have you considered one? Sure they look pretty dorky, but functionaly there is nothing that works as well. The mirror sits so close to your eye that you can see EVERYTHING behind you when have it adjusted correctly. I can see directly behind me, all the way to my side. there is absolutely no blind spot. the moment a passing car leaves my mirror, my perifrial (sorry for the spelling
) vision sees them. I can take a lane, or turn or whatever 100% using my mirror... although i still do take a quick glance most of the time...
IMHO, any other kind of mirror is a safety hazard in itself. Beacause you will not be able to see everything, it could give you a FALSE sence of security... and one day that may catch up to you.
Mike