I'm speaking from personal experience. All of my pokies have all been pretty predictable, especially once they're no longer slings. Slings do run, but most things that size do. Once mine have hit the 2" mark, they don't really do a whole lot of running. That isn't to say they won't take advantage of an open container, but from what I've dealt with, they'd rather stand and fight their ground rather than run away. Maybe I've just been lucky.Predictable, yet the opposite of everything else I've read about them:?