I only have a back up plan when I can tell from the forecast that I am going to need it. Fortunately, I've found a few barns that I can shoot in with great light for rain, and we don't tend to have super high winds very often here. So, I have only had to use the back up plan a few times. Actually the rain created some puddles that turned out fantastic for the reflections and really made the shoot. Check it out!