It seems these huggers are more for stopping rocks from being kicked up and smackin the people behind you.Here's another set of questions: How long does this thing have to be? And, taking into consideration that I personally want it to be as small as possible, where should it be positioned? That is, over which part of the tire's arc should it be placed? Look at the gizmos on these two BMWs. Looking at them, I'm not even sure why these bikes have them, as both bikes already have full-coverage rear fenders that should be doing the trick. Is this added coverage for rocks maybe?
I suppose I can figure out the positioning by setting my SV on a rear-stand, then running the bike with the rear tire sitting in an elevated pan of water. I guess that will show me where exactly the water leaves the tire.
Any of you know your geometry and/or hydrodynamics and can just figure out what part of the rear tire needs to be shielded? I wonder if there is a YouTube video out there -- not sure why there would be, but I'll look...