I have a 2020 max but I think the ballast system is the same for 2021. You have 1k bags in each locker, 500lbs bags under midship seats with false floor covering so that you still have storage, and a 1k bag in the front. 4K total with 6 pumps to fill quicker. I run 5500 pounds when I surf at altitude and consume 6-8 gallons per hour. That’s non stop surfing.


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