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Water beading and sheeting off a glossy white boat hull gelcoat protected with a hydrophobic marine coating
boat detailing

How to Remove Water Spots From a Boat Hull (and Stop Them Coming Back)

Water spots on a boat hull are dried mineral and salt deposits left on the gelcoat. Wash with a marine-safe soap, dissolve the deposits with a water spot remover, then seal the gelcoat with a hydro...

Jun 23, 2026
Undrdog
boat coatingA person applying protective coating to the white gelcoat hull of a boat on a trailer

How to Ceramic Coat a Boat Hull and Gelcoat Yourself

To ceramic coat a boat hull yourself: wash and decontaminate the gelcoat, oxidation-correct if needed, dry it, then apply a marine coating panel-by-panel and buff off the high spots. Undrdog Marine...

Jun 16, 2026
Undrdog

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