My boat sat in the sun and brackish water for 7-8 months a year. I only waxed it once a year. And it would be oxidized after sitting in those conditions. Get a product called Miracle Cloth. It does not strip/take the layers of finish off like compounds. I then used new finish after the whole boat was done in it. My boat when I sold it was 17 years old and looked new.
https://www.amazon.com/Miracle-Cloth...97604378&psc=1