www.thisisthelakedistrict.co.uk/news/lakes/.
The floats appear to be broken off, but very close to the mainplanes even after 60 years.
The last time I was up at Ambleside, a couple of years back, the subject of Sunderlands at Ambleside came up with the hotelier, he informed me that some local female historian was writing the history of the 'building' of Sunderlands here. He did mention that slipways were still evident, those I did not see apart from landing stages and small craft slipways.