Partial wheel skirts - what effects to expect?

[seifrob]

I hope so.
So far I have about 1200 km with skirts, hoping for full-tank fillup in a week, which will say how much have I burnt and how far I travelled. I hope 1200 kilometers is enough to level out all random impacts. Still, i feel that proper aero testing is more than needed. I admire your effort in spending five hours in tests as I somehow cannot force myself to do that.

[Gealii]

i'd like to second the though on the weather playing a part on your mileage. Aswell as some other factors. If anything they should do nothing or improve your mileage unless air from the underside is coming up into your skirts causing a parachute effect