Hi, I think you need to spend more time trying to locate the privy rather than just digging holes. Try and get yourself a probe and search for the privy like the guys here told you they do. Or do what Ted does. Look for a secondary site, like his on the river bank, and work that for a while. He found more bottles in one day than you will find just guessing. Plus Mom's patience will eventually wear out and you won't be able to dig anymore. Your effort is GREAT, but your location isn't so good. Ask old timers where they used to dump the trash or where they remember finding bottles. Who knows, they may take you to a spot where the bottles are just pouring out. Good luck.