From your question I get a feeling that you are determined to short...system or no system. We short the gap open and low of the first bar if we have a sustained move and a gap open or we try to catch exhaustion gap.Today the upmove is not even 1 day old ....
From the questions I get a feeling that people want to catch all the turns of the move and they want some system for that. That is not possible...on system you can catch only 50 % of the moves ie moves in line with that system. For catching all the moves one needs to be a Michael Jackson or Birju Maharaj ( great Kathak dance guru )of trading....and such genious dont need any system...they are system themselves.
Smart_trade