[jrc]

Has anybody found a way to prevent or reduce black streaks on their boats? I know how to get them off, either "Black Streak Remover" or a cleaning wax will usually do the job. But come next week they are back.

I've heard all kinds of causes but none seem to be perfect. I've heard it comes from the jets and planes, my slip is near the airport but everyone isn't near an airport. I've heard it come from the canvas but my streak are also far away from the canvas.