Quote from Steve Tvardek:
I've tried three times now to write a good thorough answer to this question but have stopped and started over each time. The problem is, its too complex to explain. My experience of just watching hundreds of days and trying things and learning from mistakes has led me to understand pretty well how the mkt moves intraday. Thats not to say I always know whats going to happen next (I def dont), b/c there is a lot of noise of course, but I am pretty good at determining what the mkts next move will be if certain other things happen first (again too compex to explain). My brain just sees certain situations and I react. Cant ever underestimate the need for good old fashioned experience.
My comp setup is simple, a 5 min chart, a 20 MA and I watch price action and volume associated with certain moves. I also have a tool which shows me pro-rated volume and it helps me gauge sentiment intrabar. Then I watch the DOM and pick my spots.