For the light issue, you could use a fiber-optic approach. Get some solid clear plastic tubes and attach them to the existing lights and then run them to the end of the boat-tail. I see this method on switches and servers. They use a surface mount LED and have a small bit of plastic that routes the light to the exterior of the case. You may need a diffuser to make the light output uniform.
However I still think that you would need some kind of reinforcement to prevent deformation at speed. I am thinking popsicle sticks glued together. Those can be very sturdy if made right. Or some other other type of light weight wood.
Good luck!
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Matt|ttaM
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