Growing up poor in the city, I would hop the fences on the local pools and go swimming with my friends. The cops usually broke things up and told us to get on our way but it was hot and we didn't have much money. They just gave us a warning. We were there a few times a month just to cool down. I even made friends with the pool maintenance people who didn't care either way as long as we didn't damage anything. A few times they unlocked the door to let us in rather than make us throw a coat over the barbed wired and climb in.