Made various types (notched knife blades) for my own use through the past several years. For shallow rings/tabs they all work OK (up to 5" max ) but soil needs to be moist and soft for easiest penetration. Speeds up the search, amazing how many tabs and junk it gets in one hour. The paddle drill type is my best yet but not interested in manufacturing it. ( I manufacture tarps). The small screw in the middle of the wood handle is lined up with the hook for orientation, like WV62 did with groove in handle. Many times I cannot find the target so I just move on and not try to find it with the Lesche digger. All in all, a hooked puller is a handy tool and works well for many types of shallower targets. Things I pulled out are coins, tabs, rings, wire, batteries, foil, nails, nuts and bolts, stones, whole pop cans, shredded can pieces, sinkers, all kinds of junk. When you hook something it comes out real easy. It leaves a sort of a ragged hole many times when you probe and probe and can't find the target but many more times just a single invisible slit or two is made. The paddle drill is strong, won't bend and can even be used like the screw driver for digging.