In my regular gig I've been messing around with cab placement these last few shows. I've found if I have the bass cab (a 212 cab) off to my right pointing across the stage so the sound is coming across to me and the drummer - we can both hear things pretty well. We have PA support so I'm not needing the amp to fill the room. Also it means I'm not standing right in front of the cab plus having the little bit of distance means I'm actually hearing the bass better. It also doubles as a stand for the desk which is useful!
I've tried having the cab in front of the drummer kinda in front of the kick and hi hats and again angled towards me but the above placement is better in terms of fitting on the 'stage' area and for us hearing the bass.
This will be the preferred set up at gigs where we have the space to do so and where we have PA support as the whole band feels its a good compromise for on stage volume, hearing the bass and practicality.