I know I'm going back a while but just catching up and wante to play devils advocate on this, I grew up with an inground heated pool in our backyard, out in the country and well into the woods. Often when it rained or it was a particularly hot night my family and I would go skinny dipping in it, it was dark (other than the underwater light) there's no possible way anyone outside of the 4 of us could see and it just didn't make sense to put swimsuits on and get em all wet late at night. I never thought anything of it, but I remember it coming up in passing and my friends thinking it was gross but honestly I never cared, none of us cared, we just liked to lay in the water and watch the rain or cool off or just have a quick dip for fun. No big deal in my opinion at least.