I have to say that I agree and say that I think that it would look better rounded and without the sided. Maybe even make it more like Sean's Cobra spoiler and have it look like an add-on to the car. Not that saying it that way makes sense.

Fine! Maybe I will!

Do you guys think there should be any sort of side to it? I could round off the edge and do a slow taper keeping somewhat of a side lip.

Ya, but for the opposite reason. In the cardboard cutout my round edges are straight.

I personally don't like how big the side is and I liked the way the cardboard edge kept with the flow of the body. Sorry for the rough picture but I like it a little more like this:





However, I you were to remove the side like this would it be strong enough under force or would it break?