Try at the head of Turkey creek on the SW side. In and above the FS campgrounds you can find some color in the creek. Don't know if there are detectable nuggets there. Downstream some pretty good sized chunks have been found but it's all private property and off limits.
Just outside of Gleeson there is a placer deposit but that's claimed and being worked commercially now.
Never heard of anybody detecting a nugget at Dos Cabezos but several have found good gold drywashing. The placers there are very small and scattered.
Gold Gulch just outside of Bisbee has detectable nuggets and a LOT of trash. There are some club claims there, you might consider joining because it looks like the rest is all claimed up.
Ash Canyon outside Sierra Vista has good gold but the area is heavily claimed. I think there may be some club claims there.
Many if not most of John B's legendary big nugget finds were from the Greaterville open area. The biggest nuggets in the Southwest are still found there. Well worth your time to visit there. Beautiful area with easy access. You will want to go soon though because once the monsoons start the chiggers, humidity and the grass growth will cut way down on your productive beeping time.
Heavy Pans