303 is awesome for protection. Used it forever with great results. For cleaning I use a "cocktale" of salt-off (generic equivalent is fine), an orange based boat soap, and Inflatable Boat Cleaner from NRS. Wet the boat down first. Don't clean in real hot sun. The boat cleaner is good and strong stuff and could leave streaks if allowed to dry on. Soap up 1/4 to 1/2 side of the boat, hand-mitt scrub and then rinse. (No need to repeat...lol).
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