I am a modified Beach Watcher. I pretty much follow Phase 2 and WW at the same time, most of the time, but when it comes time to use my flex points, I treat myself to what I want because otherwise I will binge for a month straight (which these girls have seen me do.) Minus the first 8 lbs I lost on Ph1, the other 29 lbs came off being a Beach Watcher.
Incidentally, I spend my flex points on beer and 1 meal out a week, typically. Not allowed on SBD, but I'm an Irish girl and that's what I drink. I still lost the weight drinking beer.
Good luck!