Island hopping

I had experienced island hopping in the group of islands called Coron that is situated at the south of Manila. In one small island, there on was a short beach that was deserted. We had that small beach for ourselves and we had our lunch on that beach. I suggested to go back and stay overnight on that island that is quite forested and probably not owned by anymore. But the tour guide said that it is dangerous to spend the night there because of the local pirates who would not only rob you of your valuables but will also take your boat.