If there is any black sand you are going to have a really hard time. You will also only be digging about 4 in at half sensitivity. VLF machines are not made for saltwater and at the beach all the good tones are in the wet sand. You really want a FBS or PI machine for the saltwater.
------------------------------------
AT PRO, Pro Pointer, Garrett Digger, Homemade Sand Scoop, 2014 - 1 Gold Ring, 2 Silver Rings, 1 1943 Silver Dime, $122 Clad Coins, 343 Bottle Caps, 432 Pull Tabs