Third season breeding, I've never cooled, and this season I've had locks every time I've paired. I do pay attention to the females and how they are behaving, as well as watching for weather systems. However, I've paired without weather fronts coming in this season and they're still locking. This has been a wetter fall here in Georgia, and I do feel that also contributes. My first year breeding we were having a drought and many breeders in the drought area were experiencing fewer locks that season.