Good information so far but I'm a little confused when it comes to a dog you have trained to be a flusher.
If your flushing dog stops over a bird and does not move, is he standing game, displaying a weak point or both? Or maybe a pointer person would define it as a weak point and a flusher person would call it standing game? In my example above I think the dog has stopped right on top of bird scent but has not flushed it because the dog cannot see it, but knows it is right there. In this situation I have always thought the dog was standing game and have always encouraged the dog to continue to hunt and dig the bird out. I have also seen dogs that have had too many nicks for steady or sit at the flush turn into game standers.