My first advice is "Don't do it unless you are going/have gone crazy." It is brutal. Bring an insulated pad to kneel on and gloves. Also I rarely use a pinpointer but with frozen ground it is really worth the extra trouble. Also for some reason the AT Gold sounds off slightly iron audio when I wave frozen chunks of dirt past the coil. I found a sterling religious medal and another silver butterfly with no markings. Took away some of the pain. I guess I'd call it methadone treatment. LOL