DislikedI can imagine he would have an emergency stop of say 2 x 20-day ATR in the market and will look at his chart at the end of the day to make a decision to avoid being taken out by a spike intraday.
You can look at the swings and decide what it would take to stay in till the end of the swing.
Somebody earlier in this thread mentioned that to stay in would take a stop of 1 1/2-2 x 20-day ATR.Ignored
Hindsight is 20/20