Today I went to my usual beach, it was high tide and not many finds. At one end of the beach (my last stretch before I leave) for the last month I found 5 to 6 foreign coins. So today I decided to grid that 50 foot square area and I found 25 coins in that area. My son-in-law thinks it might have been a metal detecting club doing a seeded hunt, maybe, but all of them must have forgot to turn their machines on. How do you miss so many finds?