A class-6 whitewater stretch is ‘unrunnable’: a Niagara Falls wipeout zone. So, this round-up of whitewater hotspots will whisk you to rivers that are slightly less murderous. Class 5 means doable but brutal.
If you decide to ride one, keep your elbows in to avoid smacking anyone in the mouth as you row, during those brief spells when you succeed in staying aboard your inflatable.
Also, always keep your legs tucked in. That way, you avoid bashing your knees against rocks when you spill – as you will if you brave any of the world’s most explosive whitewater stretches.