This site may be of help. With Western Fence lizards, just look for a generic place a lizard would live in; lots of hides with a basking place. I catch 'em all the time up in Portola CA. The Med. Geckos, just turn on a light and they'll come get the bugs, I've heard.
If you come across an area that looks interesting or promising, check it out! I found more fence lizards and the occasional snake (garter, I think) at my grandfather's property by relying on my gut feeling than anything else.