I'm 6'5" and have had the dart fly screen for a couple years and I did find it helpful, mainly because I slouched a great deal while riding. I have recently picked up a Corbin seat with backrest. That has caused me to sit up straighter and now I find the fly screen less effective but my back feels much better. I am currently looking to pick up a roadster or Memphis shades screen (used if possible but may have to go with new if I can't come up with one).
