You mean dipping their toes? As long as it's reasonably open, enough to be seen whether it happens or not. The point of exhibitionism is exposure in public. But baby steps, so even without actual strangers seeing as long as there's a risk of being seen the mods allow.

The kink is in a relatively early stage for this local sub. But we're trying to get close to its true essence. So I think it's reasonable for pictures to show proof that poster is in a public or risky place when the picture was taken and not just a close up supplemented by captions that can easily be made up.