Meh, going with the flow works for me, granted my competition experience in submission grappling is a little limited. I just do whatever I feel makes sense at the time based on what my opponent is doing and how they are positioned. It's easier to be flexible that way. Over think it and you can end up wasting energy forcing things that aren't really there. Much of BJJ especially (as opposed to Sambo or Catch wrestling) tends to be based around stifling your opponents attack and faking things till they do something stupid and then capitalizing on it (that's how much of my bottom game is whereas my top game is much more proactive and forceful). Really it comes down to personal style and what you feel in the moment.
Member of DaJoGen MMA school under Dave Hagen and Team Chaos fight team under Denver Mangiyatan and Chris Toquero, ran out of Zanshin Martial Arts in Salem Oregon: http://www.zanshinarts.org/Home.aspx