I've seen the discussions on hardening the door frame with screws, but I haven’t seen anyone talk about the floor…unless I’ve just missed it.
We went up this weekend to work on our cabin and I had to wonder if someone didn’t try to get it from under the house. We sit on a slope, so the crawl space at the back up the cabin is a little higher than at the front. The plywood floor has some surface cracks here and there and we’ve seen a few nail pops. But one particular crack looked fresh to me (no dirt in it) and there was two nails popped up a little around that piece of wood. Maybe it was nothing, but we went around the cabin and dropped 3” screws into the floor to make it a little more difficult to push up, just in case.