I got permission to hunt an old farmhouse that is probably at least 80 years old. It is on a fairly busy road and I am guessing that it has been hunted before--hard. I was surprised at the lack of targets. I hunted for a couple of hours and only dug about ten targets-none of them coins. All of them junk. Are there still old coins there? I suspect that it's likely but they won't come easy. How hard will you hunt? How long can you go without hitting a good target and still have the enthusiasm to keep hunting the same spot?