Excellent posts by inspire,and Saints posts on gaps,I have a practical solution as under :
We have an uptrend for 2-3 days,last day showing thrust in Higher top,higher bottom formation ,next day market opens with a visual gap,and 5 min high taken out,great, we are riding the uptrend.
But if 5 min low is cracked,there is a possibility of exhaustion gap and we should reverse.We may get stopped out couple of times but it will be a small SL of 40-50 points,and since we have a large upmove already in our pockets,we can practically afford a couple of stops getting hit,but more often than not we will catch the exhaustion gap and go short from 40 points below the swing high,is n't that a great entry ?
Smart_trade