That's odd to get permission, only to have your traps run over. I had a similar incident last season where a farmer had given me permission, then 1 week after I made some sets he tilled the field. I lost a couple traps, found one 200' away and he happened to miss another. I happened to mention it this year when I asked again. He had no idea he had done that, and apologized. This year he was kind enough to call and let me know he was tilling, unfortunately I had just put in 6 spanky new sets the night before......such is life. I'm just happy to have some land to use.