Will, Stocks that pull back after a gap should be a minimum of 10% from close to open, that gives you the best chance for a pullback to happen. Stockcharts scans has 2 great predefined scans call "Breakaway gap up" and "Runaway gap down" they both use 5ema as the startpoint and a minimum gap of 10%.
They dont produce many scans so its easy to pick out the ones you want to play. I would suggest maybe papertrading these styles for a while before using real money to see how they act.
I just ran a runaway gap down scan for today and there where no results they're not necessarilly easy to find.
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