There should be approximately 2 m of line between the rolling platform and the ring or bollard. Don't tie the line, but you must be able to hold it tight or the curves will fall apart. You can't drive a narrow boat effectively without a center line, which is a bit of a problem if you have a stroller cover on the boat. You can't handle a narrow boat effectively without a center line and, as the name suggests, the line must be tied to the center of the roof of the watercraft.
After six and a half years of living in a narrow boat in England's inland waterways, Paul and his wife Cynthia toured Europe in motorhomes during the winter and toured Dutch and French waterways in the warmer months on their 35-foot Dutch motor cruiser. A center line is usually best for this, but you have to be very careful if it is connected to the roof, as is the case in most narrow boats, when it could be on the list of ships.
