I see. I think the best answer is still to create a new standard install and create a backup and restore it on the other forum so that you can poke around without anyone seeing what you’re looking at. If course, it’ll be in the logs that you downloaded a backup, but I doubt that anyone would take note if it’s your forum.
It still seems hard to believe that someone will notice that you’re looking, and anyone can look at user profiles. I’m not sure that it’s logged unless you look at their email address.