This thread was started back in the day of very limited choices. Waterproofing a Sovereign was tried by many of us. Some out there were great at it and quite creative. We asked and asked for Minelab to release a more modern waterproof Sovereign. I guess the Equinox a decade later was their eventual answer. Too bad. Yeah the Nox is great, but a BBS unit in the same package would have been down right awesome.