Well, the Plastidip is off, and the scoop is back on. I also learned that the 3M tape I bought isn't strong enough to bond the front corners of the scoop to the curvature of the hood (which, annoyingly, was one of the driving factors in its initial removal). A coworker suggest epoxy, but I'm leery of potentially ruining the scoop in case I should ever want to sell it.
I probably got the wrong level of adhesion or something. What kind of tape is usually recommended for exterior part adhesion, like sideskirts and wings?