I was hoping someone more knowledgeable would chime in, this is my first year with figs.
But I too have been using what started out as 511 but morphed into straight pine bark, and pine bark compost (that I found at the local lowes. Happi Gro brand I think) + Dolomite and using diluted Dyna Gro Protekt and Foliage Pro. I am happy with the growth and color, but next year I will use more fertilizer, less diluted to push first year growth more. I will also water more during peak of summer. I was worried about over watering but when the rains came in September they took off.
I have been slowly diluting the Fertilizer more, growth is steady but slowing. I plan to water rarely during cool weather, and no fertilizer from December to late February or March here in 8B. Just my 0.02 cents. We can see teens often, single digits rarely, so probably store them in shed.