where you might envision the clothes line being strung. It's my FAVORITE spot. Remember, today's stumps were yesterday's trees. Yesterday's trees were good for tire or bag swings, clothes line anchors and a good place to play for kids.
Also...the old folks could be quite superstitious. It was a common practice to place silver coins on certain corners of the rock foundations for good luck when building a house.
Now, I would figure out where the driveway once was and think of how the old man would get out of his car and fishing for his keys, would loose a bit of change along the way. I once found a beautiful barber half thinking just that way.
TIme to saddle up and go to the barn. Go inside and scan the standing walls with your metal detector...the parts that are within good reach of the ole boy. Detect the floor of the barn, especially in the back of the stalls adn in the corners.
Next, go to the chicken pen (don't forget the coupe). Chickens are excellent watch dogs. Many a farmer entrusted his cache to the watchful eyes and keen ears of his chickens.
Someone mentioned post holes. They must be within earshot of the bedroom, I would think.
Finally, I would go to the creek nearest his house and look for anything strange...a well, a culvert...ancient stumps, concrete slabs etc. Give each a good goin' over, around and through.
You're gonna have a BUNCH of fun and who knows--you might even find that first SILVER coin. With a machine like you have, the only other variable is your WILL to find them.
Take some water and some fresh batteries and ... be systematic and best of luck to you. <><
Arkie John