Any advise is appreciated. They have survived fine without any extra help. As far south as you are, rarely will you need any extra protection. If we have one of those killing winters, and temperatures are predicted around 0E for several days, you may want to add extra protection, but for now, I wouldn't worry. I would like to propagate some more trees for myself and some friends.
Figs propagate easily from cuttings.
Hardwood cuttings taken in late February, or softwood cuttings taken in early to mid June should root easily. Another easy method of propagating figs is to layer them. Take a lower limb and layer it in the ground, weighing it down where you have soil over it. Within a few months it should be sufficiently rooted. When I bought my seventy year old house in Park Hill, I planned to plant a fig tree at the corner of the patio that I planned to build.