Clare found one of the swing bridges impossible to open, so we swapped roles. I opened it for us, and the other boat that had arrived just ahead of us. Suddenly the canal filled up with boats. There were two more from each direction. Unfortunately, Clare ran aground just after the bridge. She did the sensible thing of turning off the propellor. The next thing to try is reversing, but the pushy guy in the boat behind was by now right behind her. He immediately tried to take control telling his wife to attach a rope so he could tow us. Clare gained nothing from this “help”, and he soon decided to “get out of the way” by driving on through the middle. At least we didn’t have to deal with him any more.