Mike, I would recommend that you not run any discrimination at the beach because the aluminum trash range is also where the gold is. So beach hunters generally dig it all. If you notch out foil and pull tabs you're notching out gold rings too, so be aware of that.
Second is to run your sensitivity as high as you can but not too high that you sacrifice stability. Your machine's performance may be problematic in the wet sand, though should do OK in the dry sand. Scope out the beaches you want to hunt and see where the heaviest concentrations of people are and then grid those areas well when they're gone...like early in the morning or at night. There are "blanket drops" in the dry sand and stuff lost while swimming in the wet, so take your pick.
Finally, when hunting down at the Outer Banks, beware the Park Service "Rangers" or whatever you want to call them (I have my preference, but will keep that to myself) as they will tell you that you can't detect South of Kill Devil Hills because it's national parks land. But it's OK to drive your 4-wheel drive out there, litter, cook burgers, fish, etc. Just heaven forbid you should dig a hole in the sand, take a coin or ring out, and fill it back in. You can't do THAT!
But between Kill Devil Hills and Corolla you can. And you may well get away with it further South too, until one of the dipsticks sees you. But they also don't ALL care. Some do, some don't.
Good luck.