Hi folks I have access to a ramp over the next few days and want to take this opportunity to take a good look underneath the Copen and to protect the under side of the car with some sort of protective coating. I have, as well documented on this site, already sprayed cavity wax in all the doors and arches etc and applied stone chip guard to all under arches, panels and cross members behind the back and front bumpers wherever rust spots were present/visible. My question - I prefer stonechip as it is a much nicer product to use and looks better, lasts longer than than Schultz (traditional black waxy underseal) but would it be OK to use underneath the cars floor pans, braces etc and offer winter protection? Your feedback appreciated as always. PS. Out of interest, those Copen owners who have spent just as much time as me, if not more, protecting/repairing their cars against rust, has it returned? Just want to know if I am not wasting my time & money on a unforgiving task. I have set up a poll.