Buy upro - 3x etf. Short holding period. 15-30 minutes after a down open - that's usually the low for the day, then sell buy end of day. Current market only. When market settles - a month or so, maybe less - buy leap calls - 6 months to 1 year out - at <17% volatility, DITM. Target is .65-.75 delta. Sell near term calls against it at 1 standard deviation, then repeat at expiry. They'll cost about $2500 range for a contract of 100 shares. It's risky, though. Roll them at around 3 months out, or at .9 delta.
you wait for a real dip and buy. you can use Bookmap for it. it give an edge to a good dip (after anlyse) once you find it.