If you want to short, short something weaker, like a metal, or an equity struggling. No need to be a hero, because in the process you look rather stupid and so does your bank account.
Another option is to trade other timeframes like the 60min chart, that way you don't have to give a shit if the market "looks" high or low.
Another option is to trade other timeframes like the 60min chart, that way you don't have to give a shit if the market "looks" high or low.