As a single-frequency VLF, it will not conquer the challenges of detecting in wet sand and saltwater conditions. Even if you ground balance to saltwater, you may find that it does not provide significant improvements and you may be forced to adjust sensitivity and discrimination.
It’s also not fully waterproof, so you don’t want to get the control box wet. If you are submerging the searchcoil, it’s only waterproof up to 20”. It’s recommended that you purchase a cover-up for the control box to provide protection during inclement weather.