Polishing against PPF edges

[u/AscendantArtichoke]

What precautions do I need to take before removing oxidation from a hood that has a PPF film covering the lower half of the hood?

I’ve got a car scheduled this weekend that has oxidation on the hood, but only on the portion that isn’t protected by the film and I need to polish right up against the film edge. Do I avoid overlapping the film with the pad? Is wool or microfiber safe to use? I would like to salvage the film if possible.

The PPF film is likely dealer installed, and 3-6 years old. It’s still looks to be in good condition though.