There are only two of us and on flights, I walk on to set the next one after opening a paddle (iain gets off and does the other one) and he opens gates, winds down paddles, takes boat out of lock and closes up . When he comes in to the lock I have set, I close the gate, having wound down the paddle while iain closes the other paddle and we usually arrive at the paddles at the other end about the same time. This gives me a fairly easy time while Iain does most of the work but he is a younger fitter person 🙂 . If I see the next lock is ready, I wait and close up