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I am going to purchase a pontoon tri-toon and I need for it's overall length to be 20.5 feet because of spacing between canal docks. I found the Grand Island 20 Fnf [whose layout I prefer over all other 20' ers I came across] on a site of yours but not sure how current it is. I also found a site with 2021 models but no 20Fnf model or overall length notation. Please advise - Greg