I have mentioned before that I understand these flying boats were eventually mothballed in the Solent, UK and then scrapped. I do know for certain that a local neighbour of ours in Southampton successfully obtained two of float things that hang under the wings (sorry don't know the technical term), bridged them together to form a catamaran and even fitted a mast on it. To my youthful eyes it looked like he knew what he was doing and it did have a professional air to it even if it did look clumsy and a bit odd.
It never left his back garden. How on earth he got these two things to his property in the first place remains a mystery to me. Anyway, this 'contraption' stayed in his back garden for many many years before eventually disappearing. I suspect a house move may have brought the original scrapping full circle.