Greg,
Quote
GFCI is supposed to save everyone since the person being shocked supplies the grounding path.

If there is no grounding path then the GFCI will not provide protection. If you place a two wire appliance in the water where there is no metal piping or other path to ground, the GFCI will not trip, but there may be enough current flowing in the water to kill. This is really the same as when you are touching the hot and neural...the GFCI does not provide protection.
Don

Don(resqcapt19)