Your point being? That it's got f***** up by being left out in the open for a few years? Not being sarcastic (honestly), just inquisitive.
Surprising if that's just 3 years, I'm thinking of various bits of aluminium on my car and van that are regularly exposed to wet conditions, road salt etc and are 20-30 years old
If you want corrosion you should have seen some of the pegs me and a mate ended up clipping on Gogarth
Bare-hulled aluminium boats happily float for decades in saltwater with no issue. It’s when you introduce current from some source you get the problems. Bare aluminium is used for most of the serious boats you can buy for heading out into the sticks. It’s the cheese.
Found a nice article on the DMM site that goes into it (and anodising) in a little more detail:https://dmmclimbing.com/Knowledge/August-2011/Anodising
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