Yes. Many times. Many places.
Yes but not for at least 30 years.
Many years ago 5 of us (three guys two girls) got into my little Ford Anglia and drove to Leysdown on Sea (google if necessary).
We hadn't intended to go there, we just went out for a drive round.
Around 19:00 as the beach was starting to empty, someone suggested going for a swim.
No-one had towels or swimming costumes. I expected everyone to demur.
Surprisingly, everyone (including me) decided that it was a good idea, and everyone stripped off, tried to make clothes easy to find on the rather scruffy beach (and unlikely to be stolen) and ran for the water.
At Leysdown, you could run a mile and the water would still only be up to a bit above your knees, the beach is that flat.
So everyone wandered around naked for half an hour, then got dressed and we all eventually went home.
So, quite "skinny" not much "dipping".
But, you know what? Everyone enjoyed it enough to do it all again a couple of weeks later.
No never
Yes. Many times.
No, I haven't.
Yes sebeveral places when i was young and had a body
Oh heck no! If I ever did the fish in the adjacent ocean would be poking out their eyes! LOL!
Nope. I wouldn't do it the daytime for risk of getting sunburnt in places I really didn't want sunburned. And night time brings out the gators in the fresh water and sharks in the ocean.
Yes, I have. There are so many places to go skinny-dipping in Florida that it's hard to resist. My friends and I did it last summer, in fact. I'm not particularly shy about nudity, so it's no big deal to me.
Sure - when I was a wee tot.