Of course DCS prediction is more art than science, but when I was diving inside 10 metres as a comm diver or even on a computer recreationally, the bottom time was virtually limitless, especially if you come up to 6 metres, at which point the computer would give you another 10 hours of bottom time (for example) after spending a few hours at 10 metres.
I swore by 5 minute deco stops, no matter whan the dive profile- even a quick bounce to depth.
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