I've seen minor scuffing being polished out of windshields, headlights, etc. Mine seems uglier than that.
I started with 1000 grit sand paper and wet sanded. Eventually went to 3000 grit and then polished. All it ended up doing was making my windshield look cleaner, but still had those spider web marks.
Would being more aggressive with the wet sanding (starting with 100 grit?) do any good? Or should I just replace the windshield? What are your experiences on this?