I have a GTI 2500 and have used it a few times to look for nuggets.? The manual recommends using the all metal mode.? I have yet to find a nugget.? I do have my doubts on its performance as a nugget hunter because it is more of an "all around" detector, not gold nugget specific.? In the near future I plan on purchasing a detector more suited for finding the elusive yellow stuff.? BTW what part of California did you move to.? ? ? ?