Custody evaluators in San Francisco area

Do you have experience with child custody evaluators in the San Francisco Bay Area (specifically Marin County)? I am trying to select one and want to evaluate the evaluators. Even anecdotal information would help me.

I am a dad trying to get half time with my 7 year old son and prevent his mom from moving out of state with him.

These are some of the evaluators who work in Marin:

Margory Walters
Nancy Oleson
Andrew Lamden
Ed O Keen
Fredreica Conrad
Catherine Man
Mariane Kim
Marlene Becker
Chris Hodson
Steve Friedlander
Margaret Lee
Erica Meyers
John Sikorski
Cheryl Vander Waal
Sheryl Hausman

Any info about these people or any other evaluators?