When I go to an older home site I asume that one coin per year has at least been dropped. The place I am in currently was built in 1920. LOL there should at least be 92 coins in the yard. Over the years and at least 4 different detectors, I think that I am only a few shy of the assumed 92 coins. Still have yet to take my 3030 over it. I have beat the crap out of it with my Etrac though, so there may not be too many left to find . To the OP, I have been to a spot like that just last year. As soon as I would recover one target and cover the hole, I would not get but one or two more swipes and lock onto another target. I bet your legs and back are sore as all hell after that. I recall actually leaving before I finished the area because my knees were too damn sore to finish. Been back to that spot a few times and I still manage to pull a few out here and there. The 3030 has managed to pull more from there as well