Use a DD coil and it should work fine. Ground balance in the salt mode. If you have false signals then turn down sensetivity or go to a smaller DD coil.
Excal 1000, Excal II, Sovereign GT, CZ-20, Tiger Shark, Tejon, GTI 1500, Surfmaster Pulse, CZ6a, DFX, AT PRO, Fisher 1235, Surf PI Pro, 1280-X, many more because I enjoy learning them. New Garrett Ca