So now that the stuff has had several days to dry I have been doing some testing in different areas. Bottom line is that I am not thrilled with the adhesion of the POR15. All areas that were hit with a wire wheel and made too smooth were then sanded with 40 grit and prepped with the metal ready as prescribed. Its not that the stuff is peeling off in sheets or anything but scraping gingerly with a razor peels it up a little too easily. In contrast to the paint that was there from the factory which is hell to get off I am just not thrilled. This leaves me with a conundrum, I can change to something else for the rest of the undercarriage, but do I leave the POR15 even though rust may start underneath it? My prep work took a month for 1/3 of the undercarriage and I am pretty pissed . I have no way to get the body off nor any desire at this point. It will come off next time around most assuredly. I am tempted to clean the rest down to paint, scuff and hit with undercoating but I do not want to leave anything that is going to mask rust down the road. Car will likely never see the rain again but I live in FL very close to the ocean...and salt. Ideas? sentiments? suggestions? commiserations?