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How did I miss this? Oh I know! I was on a boat for a week at the time this first came up!
I have several gauzy pull-over-the-head dresses that I slip on over swimwear, and I carry dry swimsuits/undies along with me to change out of between dives if the SI is going to be more than an hour and I don't want to sit around in wet stuff. It's easy enough with two piece suits to take off the wet bottoms once the dress is on and slip the dry ones on. Pop the wet stuff into a plastic bag, and you're good to go. Same method with dry undies for the return van ride. Commando works, too, but then you have to put an icky wet pair of bottoms back on (and they twist/require tugging, which can be rather awkward) for any subsequent dive you do.
View attachment 169184This is the dress...comes in several colors!