All marine vinyl manufacturers recommend cleaning the vinyl with mild soap, (Dawn, Ivory,Etc.), and warm water. Ideally, you should clean the vinyl after every use to avoid the need for any other cleaner. Should you find the need to use anything other than mild soap and water, only use a cleaner that is specifically for marine vinyl.
Follow all cleaning methods with a thorough rinse of warm water.
Keep the boat under a roof or covered with ventilation and/or a moisture remover such as damp rid whenever possible. If using a cover, uncover to let moisture out as often as possible to prevent mold or mildew.
Be Cautious of bleeding dyes from swim suits, towels, etc.
Clean suntan lotion and/or insect repellants from vinyl a.s.a.p.
After cleaning, use AeroSpace 303 vinyl protectant as directed religously.