We are returning Bartimaeus to the marina where we first embarked, over four years ago. We've passed the entrance twice this month, once with Heather on board, and again after she left. We continued north as far as Stoke Prior, but made sure not to pass the winding hole near there. The next winding hole is at the top of the Tardebigge Lock Flight - 35 locks each way. The winding hole was almost obscured by the raft of moored hire boats, but there was just enough space to pass, and plenty of room to turn.