Anyone have a good way to clean the anodized parts like the swin platforms?

Clean or strip? To srip use oven cleaner.

I just want to clean the heavy water spots.

Vinager should take the water spot off.

Tried that it did not make the blue color shine.

Remember anodizing fades from UV (Sunlight) They may be faded. In that case, you might want to strip them and powdercoat them. I did a friends boat a few years ago and it came out excellent. Look as good today as they did the day we coated them.