My Bigfoot has been sitting in my backyard "storage spot" unused for about 2 years. I had a fabric type cover on it, but it developed a light mildew. I hired a woman to polish and wax it a couple months ago. She didn't know what she was doing. I got on top of it yesterday with a pressure washer to get the black crud off it. It had a lot. I used Mr. Pink soap in a foam cannon.
Anyway, yes I had black streaks that my 2800# pressure washer couldn't remove. Hopefully compounding it will work.
edit add: seems I heard someone somewhere say that RAIN-X will clean the Bigfoot windows.
