Thaks everyone . I spend quite a bit of time out and about also, and don't see very many snakes at all. Snakes in general don't bother me much. I'll catch a black snake, rat snake, etc. in a heartbeat and relocate them to my barn to keep rats amd mice in check. I was actively looking the other afternoon when I ran across / into that one, but just did not see it until it was basically too late. The camouflage is just that good on the dang things. I think if people only knew how many times or how close they've been to being bitten, and never knew the snake was there...well, most would never go outside.
Like I said above, thank GOD and good boots, since that's the only things that prevented a bad situation.