I was being gentle at first as I was just peeking about and the whole lot felt pretty solid, with only one small area of noticeable rot on the end of one board. I was thinking of the option of getting the boards up with the chance of re-use elsewhere and using the existing support structure. With further investigation I think the rot's started all over the decking and about to get pretty noticable. Current recommendation is to rip it all up, burn and start afresh. It's been down less than ten years. Having looked around the internet I'd have to concur that softwood decking has about 10 years life expectancy, which may surprise a number of owners.