Fill the spray bottle with a 5050 mixture of vinegar and water.
Diy pontoon cleaner. Find one you like such as Sharkhide or Bio-Kleen and use as directed. 9 times out of 10 Ill go with 320 400 600 and 1000. If you dont have a pressure washer then just do your best to wipe down the surface with a wet rag as you spray.
You dont want to let vinegar sit on aluminium for too long. You know those things like Meguiars NXT 20 and such that you find in. Cleansers are critical for keeping aluminum sharp.
Rinse by hand with a sponge and bucket or use a hose or power washer regularly to remove algae barnacles scum debris and buildup. To deep clean aluminum start by cleaning the outside of the boat with soapy water to locate the spots to wash with vinegar. No matter what you end up using make sure you wipe products off with a soft cloth and avoid products that are.
Allow the toilet bowl cleaner to work into the surface for five to 10 minutes depending on how stubborn or thick the stains are. Proper pontoon care always starts with washing and cleaning. This is especially true for saltwater pontoons because of the salt deposits.
What I use most often is called a sealant or paint sealer. The Grits I use depend on how bad the aluminum is oxidized. Pour the mixture into a spray bottle and give your boat a good spray.
Rub the water into the outside of the pontoon. But if that vinegar and baking soda duo just doesnt get the job done anymore then it might be time to try something like Boat Bling. Steps to Clean the Pontoon.