A contentious issue, I may as well post something about 'keeping it simple' on 12v electrics on the CWF...
I wherever possible, close lock gates behind me when leaving a lock, obviously unless a boat is ready to come in to the lock. Old working boats didn't, and the trip boat I shared a few locks with today didn't either, and many other boaters these days don't.
I must admit, largely being single handed, being able to go straight in to a lock, or indeed leave one without closing the gate behind me, would save the time & hassle of moving the boat, tying up again and going to open/close the gate. Obviously if they've been left open in the wrong direction, they have to be closed, but the lock needs to be 'turned around' anyway? I guess with leaky gates as common as they are it's best to close both, but as the trip boat guys said, in that case the lock ends up half full, set for neither end.
It's a question of convention & respect, which is which I try to do the right thing. But I'm also happy to apply a bit of logic to the situation. Either way, we probably end up doing about the same amount of work?
A hundred years or two - Next weekend I shall be celebrating a centenary, and a bicentenary
6 hours ago