Staircase Locks - I shall say zis only once!

When going down a staircase of 3 locks assuming they are all empty, fill the top lock by opening the paddles on the top gates. While the top lock is filling open the top gates of the middle lock or the bottom gates of the top lock and start to fill the middle lock to the marker. When the middle lock is half full or half empty depending on what sort of person you are, close the top paddles of middle lock or the bottom paddles of the top lock. Continue to fill top lock. When full, open gates and bring boat into top lock. Close gates. Open bottom top paddles or top middle paddles until levels in top and middle locks are the same. Open top bottom gates or middle top gates and move boat into middle lock. Close middle top gates or bottom top gates. Close top middle or top bottom paddles. Open bottom middle or top bottom paddles and fill bottom lock. When levels are the same in both the middle and bottom locks open the bottom middle gates or the bottom top gates and move boat into bottom lock. Close bottom middle or top bottom gates. Open bottom paddles and empty bottom lock. When level is th same as the external canal open bottom bottom gates and leave lock remembering to close bottom bottom gates after you have left. Got that?
Going up is even easier. make sure the top lock is full, the middle lock is full and the bottom lock is empty. Then go and find the very amiable lock- keeper!