Just washed and used protect all on the beast. Iíve got these streaks that wonít seem to come off. A little history: Just bought this 2019 used Coachman Freelander 31BH. Seems a little early in its life to have permanent staining. Not sure why the pictures are sideways sorry.
Ahhhhhh now I see them, Weather is low 80's low humidity, I think its supposed to be like that all week, Have you tried ant cleaners? I know the boating people have stuff to remove black streaks, Check West Marine,
Iíll check some marine stores thanks, itís crazy to think that something has etched its way into the gel coat on a 2019.
Meguiars boat and rv products are what I use. Safe on all fiberglass and gel coat surfaces. Their oxidation and gel coat restorers are great products. Use those, soap and wash, and wipe it down with a water spot remover and it should be good as new.