I am doing what we did on our white sailboat hull, no wax as it tend to lead to a chalk finish faster, rather we used Astroshield. Washed and applied once a year. The company went out business when parents died and children fought over value of business. This happened about 6 years ago, until then it was in every auto and marine store here in Florida.
The patent was bought by a chemist in Ocala who now sell it via the Internet. It is same stuff as before. Our hull was reprinted 14 years ago and when we sold it, it still had a shine no chalk.
Google Astroshield, you see the original yellow can but it now comes in a nondescript bottle. The children wouldn't sell the right to use the old can for a reasonable price.,
Greg Matthews