Might want to make friends with a cop and get him into detecting.Used to know a cop who bottle dug.They'd get a group hunt on some properties in the roughest section of town.The cop could get info on properties scheduled for demo to be turned into habitat for humanity homes.Before the house was knocked down they'd all chip in on renting a back hoe.The cop would come in uniform on the dig.The neighbors would all stay inside because of the cop.After the dig they would split the bottles.Anybody else would get gunned down in that section of town if they tried digging in a yard.