Oh yeah, forgot about the corrosion issue - that is another reason why I would never go alu...
When I occasionally got or borrow one, I always forget to dissasemble things, as it is SO cumbersome and a waste of time I would happily pay to get rid of.
I never rinse my foils at all, only take the mast (one screw only) apart for space, if I got two foils in the car at least, otherwise not necessary
Life is too short and too good for using time on that, if you dont have to
I think this would be a lot bigger issue than I could ever imagine, for me, come to think about it