Most of you have seen it. But how good are you at it? Navigate a canoe slalom course on Google and see for yourself? Our best time, given arthritic sausage fingers, is a not-too-dire 47 seconds. Having said that, I hear Helen Reeves can do it in 20-0dd seconds, which would sound ridiculously quick if it weren’t for the fact that she’s an Olympic canoe slalom medalist.