Thank you, once again, everyone, for all your suggestions. I will be trying several of them.

Regarding blinking vs. steady, I appreciate the comments on both sides of the issue, but I do lean toward blinking. Years ago when I decided to commute to work by bike, I bought John Forester's book, Effective Cycling. When I read that he recommended against rear blinking lights because they "distract" drivers, I immediately decided that's exactly what I wanted - to distract drivers - and went out and bought the blinky. I want to get drivers' attention first and foremost. I do like to keep an open mind, though, and will look up the German study that condemned them - I am curious about that.

Many thanks for all the comments.