If You’re Uncertain, Stop And Think

So what was the lesson learnt? Simple really. Always err on the side of caution if things do not seem quite right. Don't try and 'force' your passage into an angle that doesn't match the suggested instructions. Generally a compass won't lie so if it's telling you you are 10 degrees out, then you probably are. Thanks to Jon's sensible and considered approach we successfully made our way up the river with no problems, despite the fact that all his crew were moaning about him being over cautious!