PPF is thick relative to vinyl, but thin when it comes to actual protection. PPF will protect your paint from scratches, swirls and chemicals. But if a rock or stone is big enough to chip your paint or dent your hood, it will do so through the PPF. I understand people will argue until they're blue in the face that PPF is amazing, but it's not a miracle product. You'll still see rock chips and dents with or without PPF.