Clyde Ransom provided me some mirror lifts for the C14 to do some testing and evaluation of, and I have been using them for several months now. At first I felt like they made the bike look a little odd, but after I rode with them a couple times, I didn't really care how they look, because they work. They not only improve visibility to the rear, but they also provide a wind break for your hands in the colder temps. I have grown pretty attached to them, and I doubt I will ever take them off the bike. I tried a couple different heights, and the ones pictured are 65mm if my memory is correct, and this is the size I like best. I still see just the very top edge of the bag in my mirror, but the rear visibility is no longer blocked by it. It is a definite improvement. Clyde has informed me he is going to start selling them in limited quantities, though I don't know what price he has set on them. Here are some photos of them. I also took some photos on the road so you can get an idea of rear visibility. http://www.pbase.com/fredharmon/mirrorlifts