Need them here in SoCal too.... We have good weather, close to beaches and not too far from Santa Barbara but you have to bring your own water.
I've posted before that they need to do a road show. Maybe if we all get together, we can convince them!!!!
IMO your best bet is to watch the prospective pc in action. See how he/she interacts with the student. See if verbal ques are consistant with what we know is nonsense or quality. Treat a sit in as an interview. And don't necessarily buy into the pc's past as a precursor. Just because one can perform a task doesn't mean they understand how to teach it. Reference some Jennie Finch video.... she's a phonominal pitcher, and actually throws with a ton of IR whip, but will use disturbing ques and demonstrates a clear HE style when teaching......
One question will shed much light on whether the pitching coach understands arm whip or not: "What direction should the palm be facing at 9:00?". If they say behind you towards second base or towards the ground, then you need to run as fast as you can to another PC. If they say towards 3rd base or better yet "to the sky" then they have passed the 1st test. Of course there are more questions to ask, but if they can't pass the first test, the rest doesn't really matter IMO.
You are in Sacramento, I would jsut just contact BoardMember or Rich Balswick and see if they are taking new students and save the worry about making a good choice. You'l have to drive a little for lessons but it seems well worth it.
IMHO asking a bunch of questions straight away is a waste of everyone's time. Go and observe a lesson and then if warranted discuss pitching philosophy. This is one of the reasons before I take on a student I often do an evaluation at no cost. That way both parties can decide if there is a future working relationship without feeling obligated.
I agree watching a lesson would answer all the questions. The problem is I could spend the next 2 months going to watch lessons there are so many "Pitching Coaches" around here.
I'm just trying to narrow the field before I go watch. Between practice, hitting & pitching lessons and tournaments, there are only so many hours in a day.