I just bought a DFX two days ago, and am going to the Cape in two weeks. Any pointers on the DFX for the salty beach? Have been going for three years now but confined to the dry sand because the cheap detector i bought from radio shack would beep every pass when i got near wet sand. and im all excited seeings how i see other metal detectors out there near the water pulling out rings and old coins.........excited in New York!!!!!