I wouldn't mind doing the chang-a-tray thing until I could purchase a print washer. When people say "wash for 60 minutes", I envision my bathroom faucet going full blast for 60 minutes. Ian said that a gentle trickle would work as well but, even that seems like a lot over an extended period of time.
a gentle trickle would work but you'd have to find a way to remove some of the water as it trickled, kind of like a tray siphon. I would try wash in a tray. Search the forums for the exact way to do this.