Quote from cdowis:
I think of POT as the "scare" factor. How likely is the maket to touch my stop out price. Most of my losses occurred because I was stopped out of a position, rather than the actual price at expiration.
POT can be used to measure how often you will stop out. If you have a lower POT, it means you have a smaller chance of stopping out.
If you found that your loss came from stopping out, you might want to select your short strike with a lower POT.
Usually when POT increases to a uncomfortable level, I will hedge partially even it doesn't touch my short strike. Because if you have a bigger chance of getting stop out, you should close with smaller loss, or make partial hedge to compensate your potential loss.
)