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
I haven't use the Clean Sweep Coil for the Sand Shark, but have used it on the Tiger Shark which is a VLF. Your 3 X 18 Clean Sweep coil fot the Sand Shark should be deeper while the TS gets about 7 inches. Both pinpoint just off the tip or heel. Where it excels is coverage of lots of area to beat the competion to the gold.