Waiting for the Sandford lock. This was the second deepest lock on the Thames, Teddington being the first. The very nice lock keeper climbed down the steps to take my rope, put it round the bollard, and then passed it back to me. That was all well and good except when he opened the sluice's there was so much water coming in that I had a real job to hold the rope. I started to panic because trying to hang on left handed when I couldn't even help hold the rope with my right hand made my left hand cramp up. The boat started to drift alarmingly into the middle when just in time the lock keeper noticed my plight and grabbed the rope from me. Potential disaster of colliding with another boat, avoided!!!