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Message: <blockquote data-quote="Still Afloat" data-source="post: 520866" data-attributes="member: 32426">I’ll also add that 0.125 aluminum is about the same weight as 3/4 plywood. It weighs less by the time you add preservatives and covering to the plywood.  I have not done the math for 1/2” or 5/8” plywood but, I’m guessing that 5/8” would be a wash. The weight difference between 0.125” and 0.100” 5052 is about 0.47 pounds per square foot.  So going 1/8 rather than 0.100” on my Lowe 1448M jon boat adds about 17 pounds. On my larger 18’ NR Mariner it adds about 25 pounds.  The weight difference is not a big deal for the larger boat but, the smaller boat will get the thinner aluminum.</blockquote>