I don't know about you, but I am taking the opportunity to buy small amounts of 30 to 60 dollars in those that look oversold, and if they drop 10%, 20%, 40%, 60%, 80%, 95%, I buy more at those percentages. So far, it has worked wonderfully for me without following a strict strategy; I only risk a little money, I don't over-leverage, and in the end, I still achieve very good results.