Ok, I've been on this site for a while now, but I've really only adjusted the nut, courtesy of the ScanGauge II (which is still awesome). And I decided to make my first aeromod starting in the back of my Cherokee (oh, and sorry FastPlastic, it's not going to be very stealthy like yours). I don't know what to call it, it's partially a Kamm, and also like a partial boattail, just with no bottom because I still tow pretty often and use my cargo carrier (in the picture). I also wanted to make this thing easily removable so when I want to go out on the trails, I can take it off without destroying it. Lets just call it a JeepKamm for now
I decided to make it from 1/2 inch PVC pipe for the frame and 6 mil black plastic as the skin. I've also sourced some scrap lexan to "window" my taillights so as not to need to add auxiliary lights to the JeepKamm (for now anyway). I'm also custom forming some poly gutter hangers into the mechisms to hold on the mod (second picture).
So here is where it sits at tonight, as I have to go to bed to be up in about three hours for work. I hope to finish tomorrow evening and start road testing it this weekend.