Woke to a sore back and on closer inspection I realised it was bruised! Probably due to the extra rotation I was throwing in! I decided to cut the waist band of my fleece trousers which I thought was the likely culprit! It worked! Fun and games continued though with me further snapping a tent pole as I shook the sand out of it whilst breaking camp! Fortunately had a repair sleeve so could fix it straight away! Lovely bright morning with the day bringing much better weather and lighter winds than forecast. About 25 nautical miles covered today.