Originally Posted by
marmot
My Take-a-Look is mounted on my helmet visor, riding above the horizon so it doesn't obstruct my forward view at all. Thanks to its multiple axes of adjustment, I can aim it perfectly, so that the top of my shoulder is just visible in the bottom right corner of the mirror as a reference point. Just a slight turn of the head provides a panoramic scan of the road behind. Some people can't adjust to a helmet mirror. I had no problem at all.
I also prefer a helmet mount, the reasoning is rather simple, I think putting it on and off the glasses all the time, could break off the little plastic clip, and your liable to forget the stupid thing. I have 2 pairs of glasses, two bicycles and ONE helmet, so the helmet is the most logical place for the mirror.
On the point of focusing, you actually don't focus on the mirror, you focus on what is in the mirror, nobody actually cares if the mirror frame is in focus....