Hi, Just bought a sand shark and own a tiger shark as well. Sand Shark is a PI machine , its a great machine but you will dig all metal. If you want to find GOLD YOU WILL DIG TRASH. Just the way it is, but its fun because you never know what you going to dig up so the anticipation is always there. Invest in a good stainless steel treasure scoop and make your self a sifter out of 2 inch pvc pipe and Hardware Cloth and your in business. Remember treasure hunting is location, location, location, Do you research and go to places where people are apt to lose valuables. Like resort beaches where people have money. Hunt 2 hours before low tide to about 2 hours after , knee to waste deep and you will be fine. Remember the deeper you go the less junk you find. Good hunting...