There are some single frequency detectors that will ground balance to the wet salt and do well. The Vaquero does not ground balance to the wet salt. I don't believe any of the Tesoro VLF detectors do. Some one please correct me if there is one or more that do, I have not used them all by any means!
I've hunted the opposite coast from you so some of the general mineral conditions are likely to be different. What I found works best for me is a smaller coil (one of the 5.75 inch coils); set up the threshold for a usable threshold for pinpointing over the dry sand (normal and not super tuned), ground balance it over the fully dry sand (not damp) that is in the general area of the wet sand you want to hunt, keep that ground balance setting. Turn the discriminator to the low side of the foil mark (above iron but not as high as mid-foil range). Walk to the wet sand and turn the sensitivity down until you are OK with the amount of falsing you get. Good targets are repeatable responses as the coil sweeps back and forth across them, most of the falsing does not repeat. Coil presentation is very important (the more even you keep the coil distance from the sand as you sweep, the fewer false responses you get). You will not detect at the depths you do over the dry sand.
I have other detectors that I use over the wet sand areas and in the water. I now mostly leave the single frequency VLF detectors home when on beach trips. I do like a clean sweep coil for dry sand work if I have room to pack a third or fourth detector for the trip. A Tesoro with the clean sweep covers a lot of area, is sensitive to small gold, and has turned up dry sand gold for me, but there seems to be more gold to be found in the wet sand and water.
Cheers,
tvr