Wanting to have the flat spoiler back on the car because I'm trying to get 70 MPG and it seems to be a working mod, I decided to prototype again last night. I got the paper wrapped foam board for a dollar/sheet at Dollar Tree as was recommended earlier in this thread. It cut really easily of course. I put it in place. I gave it a layer of black remnant paint in order to give it water resistance. The paint, possibly because it's only on one side, warped the form as it dried overnight. So I found the spoiler kind of sticking up a little when I came out this morning, and it was pulling apart the duct tape connecting it to the supports under the spoiler. Here it is after I devised methods for holding it down more firmly and a little more flat... But I'm disappointed. I guess I should have painted on both sides or not painted it at all. Nonetheless, I'm going to run it. Polymetal will be the next, final version, I think.
