I've been seeking the perfect rear LED for a few weeks, and I know it's out there. The right light for me will attach to the back of the rack so it hangs below the rack and above the rear wheel. You'd think it was easy to find, no? Well, I've been to six or seven bike shops and no dice. I have three different rear blinkers and none of them come with a mount to fit a standard rack. And yes, I could cobble something together from zip ties or some other workaround but I want a built-in affixing method that was designed for the job. Anyone know a brand that ships with the proper mount?