Toilet bowl cleaner will work well. I would be very hesitant to use soft scrb as it contains abrasives and will scratch any shinny gelcoat.
Another good product is Hull Cleaner, works well on a variety of tough stains but again be carefull as it is also an acid.
Another good product is Hull Cleaner, works well on a variety of tough stains but again be carefull as it is also an acid.
