GreenFin and Jdsfrance,
Please check out the attached links for Bills Figs...
I have no affiliations with him or have purchased anything from him. He also holds a yearly Fig Festival and tutorial classes at his nursery.
From my limited experience, his numbers are easy to achieve with pruning and proper Culture.
http://figs4fun.com/bills_figs.html

Thanks for posting that video, ascpete.  Good stuff.

I always looked at Bill's figs and how he does things and it really looks simple if you follow what he does.  I made a self watering pot after his models before and it worked really well, the tree really grew like a weed in that pot, I made it from a 18 gallon storage drum from Lowes.

I believe the best size is the maximum size one's back can safely handle for moving in fall and out in spring. Mine was as big as 10 gallons but now may have to suffice with 7-gallons for mature trees to avoid stressing my back and 5 gallons for up to 3 years old plants.

yeah.. back problem along with lack on land and so on. repeated bending from picking up the container can add up even with 1 gals.