is a risky strategy that requires timing the top and the bottom
Yes, it is really a risky strategy, but it gives a very large profit. I trade on this strategy, it is not as difficult as it seems.
How do you do this? In order for this to work other day traders must be losing money somewhere, so you're essentially competing against and outperforming other humans. Every time I've tried to do this the coin has moved in unpredictable directions.