flux compression generators

Oh how I would love to build a flux compression generator some day. Unfortunately, there aren't many practical actuation means other than explosives, and those tend to garner unwanted attention unless you have a chunk of land from inhabited places on which to set up a test range.

If only I owned my own private, preferably remote island somewhere. With fresh water of course. And extinct volcano making up most of it. And one nearly shear face which, in the right light, looks an awful lot like a skull. And an underground water passage leading to the inside of the extinct volcano...