Thanks for the info. I have seen the template but I don't really know how to overlay it onto another picture. I had heard that 12* (approx.) was optimal and was trying to find a way to evenly break it up. Maybe something like the 6*+6* picture but 5*+5*. Would be simpler to build and still be very good. I thought I had remember reading (somewhere on here) that air flow would detach (sp?) if the angles were to great between planes. (I think that's how I want to say that.) My thoughts were if the top of the cab were considered "level" or 0* then is a 12* deflection (?) like the first picture too much and not effective? I guess that's why I was thinking about multiple angles.
I haven't found the template for side angles/top view. Is there one?
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