Lena (RIR) has been broody for a week and I don't have a roo and have a small tractor coop. We did the isolation coop (Broody Buster method) to no avail. She kept going back to the coop, fighting with the other girls and just being overall fiesty. Yesterday afternoon, I dunked her (just her body, with her head out of the water). She's not been back to the coop yet. It may have actually done the trick. I did it twice with very cold water in a small household bucket. I've read that it brings down their body temp, since their temp goes up when they are broody. She didn't seem to mind it that much at all and now my flock is finally acting normal again. So far, so good! Just wanted to report this good news.