While it's a good idea to drink lots of water, especially following a cheat, don't think it will negate the negative effects of a cheat. It will help to minimize water retension, but that's it. It doesn't make the cheat disappear & magically cause it to be OK. If you're going to cheat drink water, but don't be surprised if those cheats lead up to added pounds & inches. Also don't be surprised if "little" cheats turn into carb binges; it's a bad habit to start so please beware. Good luck.
God Bless,
Amy-Lynne