2007 ion2 -
When I've been car hunting, I've been thinking about an Ion. I've always been fond of the functional-cool spoilers on the Bonneville racers :
When I apply the teardrop shape, it looks like it fits pretty well :
* - In the above picture, the fins of the spoiler are larger than the flat spoiler, so the tear-drop shape appears to "cut into" the spoiler.
With that in mind I looked at your Ion :
And made a spoiler :
* - The horizontal white line in the spoiler is where the flat spoiler would be.
But this is just one example. From what I (think I) have learned here, the idea is to make a spoiler that "meets the tear-drop shape". Now, a Kamm-spoiler is better, but this is a compromise that can look "normal" to non-Ecomodders.
CarloSW2