My experiences with PDs has to do with mental health cases (I'm a psychiatrist). It really spans the gamut. Some were really ill-prepared, basically showing up and reviewing the chart and talking to their client minutes before the hearing but at least knowing what their role is. One guy for some reason was a huge *** to me and asked me questions about the illness a patient had (not specific to the patient) which I naively answered trying to get ammo to use against me, used his examination of me to basically offer testimony instead of ask questions, made references to my age instead of qualifications, etc. The worst example, though, was when I was a resident and just observing. It was clear that the PD didn't even review the statute relevant to the case he was representing. It was so bad that the judge did things like, "are you sure you don't want to ask the doctor about XYZ", and the PD would say "no".