I just purchased a new Tesoro Sand Shark last week. So far lots of trash and a few clad and small charms. If anyone has used or is currently using a Sand Shark and has any tips, experiences or feed back it would be greatly appreciated. Mostly I have been trying to get a good setting that gives me the minimal stable threshold so I can hear deep targets yet not have to dial down the Pulse width and loose depth. Battery life is not a concvern for me I just want to find some rings. Any suggestions. Thanks.