The Ponkan was simple since it has an upright structure. I just wrapped the branches with cloth and ran adjustable bungee cards to an opposing branch and to the center main trunk.
For the Satsumas, I purchased a 10 piece of 13/8 chain link top and cut to the appropriate length. I taped the swaged end into the ground 6or the length of the swaged end. Use S hooks at the top of the open-ended pipe and drop down to each limb. Once you attach to one limb, go to the other side and attach to an opposing limb. Even if it is not drooping attach anyway. Slowly adjust the bungee cords until you have support. Use nylon cord to make up the difference you need if the bungee cords are too short.
This is only temporary support and should be removed when the fruit is picked.
When you support this way, the weight of the branches are balanced out.