Here's something that works for me...
Get strike one! On a no-strike count (independent of the number of balls), I'm looking to call a strike if possible. Once the hitter has a strike, she is much more likely to swing the bat. The game goes more quickly (and I rarely catch grief from the offense for borderline pitches that are called strike ONE).
I know I'll miss some pitches during each game -- but I try not to miss strikes.