You could always take it to a custom shop where they do the spray on 3M film on the front end of new cars this for an example
http://www.invisiblemask.com/clearbra_land.html?_vsrefdom=adwords&gclid=CL7GqOTd0cMCFRSPfgodlEUAEQ
A bra would most likely do more damage to the nose of the overhead than to help protect it ! . The bras were/are not meant to be left on ,especially during wet weather ! , That's why you pretty much don't see them anymore , people left them on , grit got underneath it and scratched the clearcoat/paint and when wet left to dry on the car it got molded and clouded the paint...