I sort of stumbled into the thread.
What I have is a wakeboard control arm. It is an aluminum tube shaped into a 5ft teardrop. When the center front is 6" above the forks of my bicycle the tail rests on my hips. I want to someday glue a poncho to a bicycle helmet and attach the hem to the tube.
It's the blue one on the top. I've bought most of those. More for rain than aerodynamics; but I need a front mount that will let it rotate and store on the side so I can take it on the bus.