The water is cold and shouting echoes across the river. As the boat approaches the rapids, a roar goes up to hold still, before a shout of “PADDLE” and the six rafters dig into the tumbling waters in an impressively synchronized display.The water is cold and shouting echoes across the river. As the boat approaches the rapids, a roar goes up to hold still, before a shout of “PADDLE” and the six rafters dig into the tumbling waters in an impressively synchronized display.