This year I purchased a new 2021 R24 Bowrider and recently bought a "Rubber Dockie" floatation device that I keep secured to the bow deck with a sand shark line. Before the tropical storm hit New England, I removed the floatation device and to my dismay, notice two light rust spots on the Woven Vinyl Silver flooring where the buckles on the two velcro straps holding the rolled up flotation tight, had rested. I used a mild liquid soap (ivory) and water, but it didn't remove. Does anyone have any suggestions on non caustic cleaning agents I could apply to remove or lighten the stains. Thank You.