[nesslar]

I think the angles are very important. Simply building something that "looks like a duck" may not provide the proper 'areodynamics"? But should be "good enough"? I mean, what about wind tunnel testing, or whatever? Probably over thinking here, but.....I guess what I am getting at is that a faulty design might slow you down rather than providing the proper downforce you are looking for; appearance being the only concern, if that's the goal, then it probably doesn't matter much "at normal" speeds.