The best way to remove yellow stains from the fiberglass boat is to use effective boat cleaners intended for the fiberglass surface. All the products we feature in this article have been proven to remove a different type of dirt including yellow stains. The products that we featured have been proven and tested to remove this type of stains in an actual setting.
Furthermore, after cleaning the surface, you can also use products that shine and protect the surface to make it last for a long time. Again, we have shown different products from this review that offers the ability to regain the discoloration of the surface, make it shine and protect it from the effect of the outside conditions.