I have seen a few that werre left up and not bothered, then again I have people tell they've had theirs stolen. If you plan on being the last one there and the first one back in the morning it might be safe.I lock mine even if I'll be back the next morning. But I wouldn't trust anyone. You can always hide it and lock it. That way there will be less to carry. Also don't leave a trail of bright eyes leading to it. Good Luck.