Me, too. I've been watching it since the first season.
The most interesting discovery they made this season was the Loonie that one of the brothers dropped into one hole, and a year later they found it in another hole 15 feet away.
The implication is that, as this article points out, the underground geology of the island is extremely unstable.
The drilling company decided to stop when they found they were probably sitting on a large underground cavern and didn't want to risk a cave-in and lose their rig.
We'll see next season if the team decides to proceed with the 'big dig,' a 100-foot wide, 200-foot deep hole.
I like that show too, but what cracks me up is the narrator. Every time something is found, he says something like: “A spoon? Found in three feet of dirt? Could this be what the Knights Templar used to bury Shakespeares transcripts?”