Propagation: Request: Foolproof Coconut sprouting methods., 1 by guygee

guygee wrote:
A neighbor has a coconut tree that I have been admiring for years, a heavy bearing medium-tall tree that came through the cold winters of 2009-2011 like a champion. Here in Central Florida on the space coast barrier island we lost maybe 80% of the coconut trees in those winters ... it is the survivors that interest me the most, and especially this tree. So today I gathered two of my sons to help and with the neighbors permission took down as many coconuts as could easily be reached with a 40 foot ladder. One of my sons was on top of the ladder tossing them down into a grassy area ... about 10 of them split open, full of water. I tasted some of it and it was sweet. There is another ten that survived the fall. Now I am looking for suggestions on the best way to sprout these. They are not cured, but rather orangish-green, but they have been up there for many months and all were full of liquid.

Any suggestions to help me maximize my germination rate are appreciated.
I included a picture of some of the coconuts with a six-inch ruler for scale.