Of all the tuts being shared here I think majority of the people are always aware of when to exit especially in the post market where ATH and RSI aligned together. The only mistake that some of us are doing is when a bounce happen they also buy back that's why it becomes unpredictable because sometimes the bounce is much higher than the ATH. 

Truth is that is still unpredictable when  politics joins in to manipulate the market. The perfect entry point is never important as long as you can get out with profit is a good trade already.