Greenbud,
I make my own compost out of grass clippings, straw, kitchen scraps, shredded wood, etc.
I have two large bins that I rotate. When uppotting the figs, I add about 25-30% of it to the soil (+lime and pumice).
The rest is the work of the nature with sun and a bit of water every other day.
The figs that have the most of the sunlight have the most of figlets, that is my observation. Even the ones that are sun allergic, like VdB , are covered in figs.