And yes I have. Why should I have to avoid a park so two guys can have sex?
There is a website that lists places in every state where men can find anonymous partners. It was posted here a few years back.
For sodomy? Unless they have pictures it is going to be hard to prove. Public indecency is much easier but if you say you regularly have 40 people performing sodomy in your local park who don't stop even when police are arresting them, then I believe you.