I used to use the stop sign, but no longer find it particularly helpful.
I don't mind if others use it, as I once found it to be a useful tool.
I thought that I was drawing a line for the coach. But I realized that the line I was drawing was in my mind for my own thought process.
On the humorous side:
If your hand is a little bit too high when giving the stop sign, on film it looks like the "Heil Hitler" mechanic.
