I say go for it. I try to field herp anywhere I go. Even on a family vacation I get at least a few hours in. As long as you respect the snakes and the habitat you are fine. I have field herped perhaps 100 or more venomous and haven't had a single problem. If you give them space when they are located, you will be fine. Don't put your hands in places where you can't see what's underneath. Always use a hook when possible to flip rocks. I haven't hit Arizona yrlet bit have done herpes Texas and Oklahoma which is similar ad far as terrain and species go. Arizona is on my list this summer