I had a 2008 Four Winns for 10 years. Even though I waxed it twice annually, over time it became noticeably oxidized in the areas that were not under the covers. I could buff it out, but over time it became tougher to buff out, and the buff didn't last as long. So, when I bought my 18 Monterey, I had a custom "mooring" cover made that covers the entire boat below the rub rail. Now, I'm looking at a 2018 Sea Ray 290 SDX and the dealer says I don't need the mooring cover because since around 2005 to 2010, Sea Ray gelcoat doesn't get oxidized. Is there any truth to this? Honestly, for $1k I don't mind dealing with the mooring cover to keep the boat looking new. What are your thoughts?