well, it was snowy, but not so snowy where I "needed" to brush off the car, so I didnt. drove in, hit 65mph once, generally it was 40mph with 50mph on the interstate (aside from the aforementioned following cars up to 65mph). it was very windy in the cross and spin wind situations, the whole way.
took a picture of the rear of the car afterwards.
what can we tell from this? I welcome all analysis' and will entertain all ideas.
more background: the wing trailing edge has been dropped a little more, maybe another half inch from previous, played with the holes and bracket and got it down as far as I can so far. I also duct taped over the transition from mount to wing, its smooth now.
my initial analysis: appears that there is either much thicker boundary layer over the back of the wing mount down to the trailing edge, or the flow may seperate a bit, or at least its a lower pressure and lower flow area, as evidenced by the snow that goes smoothly from the wing edge to the mount start. there is also evidence on the sides that large vortex's are forming off the mount uprights, since the snow is scoured clean there. the top buttons appear to be working, as normally there would have been snow up there, but its not there now. maybe I will take half of them off (just one side) to show this better or disprove it to my own flawed memories, good test at least