Your best bet would be to go road cruising this time of year. Since you live in Fresno, you are not very far away from some great hunting grounds in the Sierras. I also would highly recommend that you bone up on their respective natural histories. Mr Brian Hubbs has a book coming out later this on mountain kingsnakes and there should be lots of good info in it for anyone to study. I also recommend taking field notes of your hunting expeditions and notating things like temperature, humidity, cloud cover, other reptiles seen or prey items running on the road( like mice or lizards), time of day, etc. This way you can build your own database of notes and you can refer back to them year after year. I like to think of it as "counting cards" when you play blackjack. When you get favorable conditions for finding what your after because you wrote down the past history of the excursion, you can nail down what the ideal conditions are to finding what you are after. Good luck to you.