short story, find stocks that are in play for the day that have spike potential , backtrack those spikes and be there before it happens based on past patterns... Hope you get a better grasp on things from here from my point of view.

*this is how I do my research results may vary.* and is not a 100% complete success rate. Just for insight.

 https://www.youtube.com/watch?v=hm5DxFL6Ae4