Andrew,
We've found that the best way to rig a stinger hook is to tie a #4 Gamakatsu treble to a short section of 65# Power Pro spectra, and then tie the opposite end to the eyelet on the bottom of the bait. That will place your stinger just in front of the anal fin of the bait. Insert one prong of the treble hook into the bait, super glue the knots in the Power Pro and you're ready to go.