Dave had a bit of a project restoring his Cat (Polyester Fibreglass boat with gelcoat finish) to its former glory.

After a basic hose off and wash, he used WATERLINE STAIN REMOVER, then GRUNT EMER-GEL Rust, Stain & Oxidation Remover (Dave calls it “Elbow Grease in a Can !) to remove the stubborn stains.

Followed by a polish with GRUNT SUPAWAX, Lagoon Hopper came up as good as new !