Have you tried Bar Keepers Friend ?
Bar Keepers Friend Product Line--Including Bar Keepers Friend Liquid: Cleaning Supplies,(www.barkeepersfriend.com)
Anybody have a product or technique for getting rid of the small rust stains that develop where the metal railings and trim meet the gelcoat?
Fluid film it works wonders... check out the website.
rust stain remover
The Works, tub and tile, takes off the wax but removes rust stains and discoloring.