Gorund tying.. means the horse stands and does not eat at all. Not moving the feet and standing, regardless of food, is what you teach.
Usually, the signal to ground tie is the line from the horse to the ground. When the line is dropped, the horse stops moving his feet and stands... and ONLY stands.. just as if they were tied to a hitching post.
My gelding ground ties beautifully just like you explained
But he is my seasoned, well trained, parade horse.
My mare on the other hand is my pain in the butt. She was spoiled by her last owner and therefore developed some very bad habits and no ground manners.
I would really like to teach her to ground tie as well but if for some reason she moves and steps on her lead rope, she freaks. So I am trying to address that issue first along with better manners