Yes this is cunning, going to try it for myself Angle of Repose.
Sailing: many years ago agreed to crew for a mate who had a yacht and was sailing out to the oil rigs north of the Shetlands, I spent two weeks soaked to the skin, never saw the sun and ate rations last served in the Crimean War, best part was when we returned back to Terra-firma and we were ensconced in a pub, he started to whinge about the expense of sailing, the crew had no sympathy and we all crashed at a local B&B leaving him to the sound of lanyards flapping in the wind and a damp sleeping bag!