“It echoed around my head. The carbon wing blade flexed in the water as I thrust like a man possessed. Past the point of no return, I was above the log jam. A broken blade, maybe even a missed stroke and that could be my last. The river was rough, it was ugly and I was bouncing like a cork.” Lovers of adventure will thrill at the task Steve Posselt set himself on the biggest kayak trip of his life. Up the Mississippi, through the canals of the US and the UK, down the Thames, across the channel...