It works great, cut down alot on the bug eating with the 4" stock.. I bought a seat off a new ultra, that put me up another inch, which creates more wind again. Thinking about getting a lowering kit for the rear to compensate. I just don't like the looks of the taller windshields after 8", I'm not sure.
I put the 4 point quick release harness on. It wasn't too bad at all, pull the bags remove a couple screws, put the new ones in with a dab of blue loctite, slide on the back rest.
I try to leave it off unless my woman is riding. I like the looks of it when it's off of there, but need it for her... that was why I put on the quick release.