"There are massive expectations from all of the rowers to produce gold medals and it has a big impact on rowing at a grass roots level, " he said.

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The rowers made a great impression on their American counterparts, even spending time providing rowing lessons for US military veterans.

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Mr George said the rowing channel between the pier and the bank was an inshore regulated zone which had been used by rowers for centuries.

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Last night the veteran rowers took part in their event, leading to success for the Caradon men's team rowing in Amazon.

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