The 56-year-old's absence over the past few days has led some to wonder whether Dalton has sacked himself from the crew. He has always maintained if he is not up to the task he will be the first one to put his hand up and say so. The punishing match schedule has become even more demanding in the past week, with organisers having run out of rest days.
The lighter conditions San Francisco Bay has thrown up in the past few days have also proved difficult for the tacticians and grinders alike.
Barker said the boats are just as physical to sail in light air as they are in the heavier breeze, if not more so.
Dalton's decision to put himself in the crew earned much derision from his opposite, Oracle Team USA chief executive Russell Coutts, who believes the fast and physical AC72 catamarans demand sailors who are young, fit and agile.
"There's no one in New Zealand he can find that is better than a [56-year-old]?" Coutts famously joked at a charity dinner in May.
Team NZ's first two losses of the America's Cup match were when Dalton was not on board, leading superstitious fans to demand the team boss sail in all remaining races. Dalton has since experienced a loss in race nine.
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