How often do you weigh in to guarantee a loss

I weigh daily, but record it once a week whether I gain or lose. I don't think I could go less often than weekly, because I'd be worried that I was doing something wrong and if I didn't know for a couple weeks, it would do more damage LOL. But I calorie cycle and often don't track properly on the weekends so I find the daily weighing gives me an indication of whether I'm travelling OK. I'm totally used to the fluctuations, though, I actually find them quite interesting.