Yup, when I lived in Washington state. Was shooting on some land close to the house that was technically county park, but few people went there. Most the ones I ran into thought my longbow was cool and had no issue but one guy took exeption and called the sherriff's office. Didn't see the authorities that day, but several weeks later one saw me sitting in my car just after a shooting session and stopped. He told me there was a comlaint lodged and it was illegal to shoot a bow in a county park, I asked to see it in writing, he showed me, didn't cite me as he never saw me shooting, and we went our separate ways, myself a little wiser. Turns out there is a county ordinance that prohibits the "launching of missiles" in a county park. All I can say is be polite if challenged, makes a world of difference.