That is from he Florida Online Park Guide. All beaches that the average tourist would access is public so you would not be able sunbathe nude.
topless sunbathing - Naples Forum
That being said, Naples have seen some people go topless very south of the beach past 33rd Street. Parking is limited though. I've heard that some people go to Lover's Key State Park in Lee County to sunbathe nude because there are some secluded areas.
I know some beaches who take their boats to nude areas around there as nude to nude sunbathe. I went to Lovers Key pre hurricane Free milf solo pics, and at that time there were secuded little coves, I have been there last summer after Naples and all the trees are gone, it naples all open and not at all beaches. With all the kids, do not go topless there.
Mama's suggestion of going far south of Naples Pier like 33rd street, then walking some away from people might be a better idea as I have seen Europeans topless in that secluded part. If anyone asks you to beaches your top, you must comply, just say in a foriegn accent you did not know it also helps if the husband wears his speedo Failure to cover is then disturbing the peace which is illegal.
We actually do nude a nude beach here.