I find Saturdays the best day to pick up extra work, start the pressure washer up around 10am and they can't moan that I disturbed there lay in as most people are up by then? (well I am Lol)
Some are just going out shopping or what ever, they hear the washer going, have a nose and some come over to ask how much to do there's.
Then you get the curtain twitchers, I like them as well

When I was still on ladders I used to rattle them a bit louder on Saturdays Lol