I have been to the Canaveral National Seashore. I have heard that when all entrances to the beach are available, Number 13 is the clothing optional section. If there are a lot of people, then it will spill into Number 12. I was there after Milton hit and all entrances past Number 6 were closed due to so much sand on the road. Thus, Number 6 became the clothing optional section. So.... it would appear that the farthest open section is the clothing optional section. Or so I have been told by a regular visitor. I had not heard that Number 5 is the clothing optional section.