Today I took the insoles out of my aqua socks.
They weren't attached to the body of the socks, and were slipping around while I ran, which was incredibly annoying.
I was a little concerned about heading out with only a few millimetres of silicone between my feet and the ground, but really it felt fine.
Out of curiosity, I have also weighed my aqua socks (sans insoles)
100g each, about 3.3 oz. Now *that's* minimalist.