My fig tree is old. I don't know how old, but at least 20+ years, probably more (because nothing was done to this property in the 20 yrs or so prior to us buying it, so it had to be there before that).

2007 - The Year of the Rain - it produced figs like mad.
2008 - The Year of The Drought Part I, no figs, but produced about a zillion off-shoot branches/new trunks. last fall, after Ike incidentally, I pruned it a TON. More than my husband liked, but it was desperate for some real pruning.I also mulched around it, but no fertilizer.

2009- The Year of the Drought Part II - I confess I kind of neglected it for awhile and didn't water at all for a long time. Then I started watering....it looks sparse, but did produce a reasonable amount of fruit and finally looked healthy. Alas, the dang grackles got to all the figs before we put a net up, so we didn't get to enjoy it.

It's about 12-15 ft tall at it's highest point, and unfortunately the way the branches are laying out after the pruning, the fruit is all in places where if we just put a net over it directly, the figs would be against the net - right for the birds. I'm seriously considering building some sort of "tent" like frame to hold the net, but that seems overkill.

We got quite a few figs from our 15 year old fig tree this year. They were small due to the drought, but had good flavor. We water a little, but don't fertilize. Fertilizer might work, my grandfather grew the best figs in Austin with aged manure from the chicken coop. Too much water and the figs will drop. Mine is currently dropping older leaves and putting out shoots for a second crop. They apparently prefer alkaline soils like we have in central Texas. You could look into your soil ph to see if that makes a difference. I recently saw a fig tree in a neglected yard in West Houston absolutely loaded with figs, so it's hard to tell exactly what works and what doesn't. There is a very active fig forum here on GW and they have been helpful to me.