The splicing instructions call for specific bury lengths, depending on the diameter of the rope. My bury length probably doesn't maintain the *full* strength possible, but I have tested it to weights far above what it will be subject to in the hammock without any incident. I'm confident in the strength.
Samson's 12-Strand Eye Splice Instructions (for 1/8" Amsteel)
Samson's 8-Strand Eye Splice Instructions (for 7/64" Amsteel)
Wikipedia Chart of Fid Lengths for various rope diameters