Todd, nice.  Do you have a part number for the "Equinox" threaded mini-plug end (and pigtail)?   Is that an off-the-shelf item or did you make that yourself?  If I can get that threaded plug and pigtail, I can easily solder it to a pair of amphibian Grey Ghosts I have laying around that have the unfinished connector end.  Would be awesome. In the mean time I have come up with a kludge for the WM08.  Since the WM08 is not submersible, what you CAN do is put it in one of those waterproof cell