It's not about how you feel, you're dead, obviously you wouldn't even know. Would your family enjoy seeing that done to you? That's pretty much the amount of disrespect you're showing. By skiing on the cemetery, it's lacking any sort of respect for what lies beneath and the boundaries specifically set by the cemetery. You don't see them digging graves in the middle of your terrain park. It's not made for you, so stay out. That's my opinion.