Are you more concerned with eastern diamondbacks, water moccasins, or copperheads? Or just all of the above? EDB would be the only one I’d wear boots for, due to their fang size, and they usually let you know when you’re getting too close.
I hunt zones B and C in FL and I’ve not encountered many snakes that have me concerned. I usually look where I’m going and try to stalk through the woods, I own snake boots but most often I’m in leather danners, it’s just too hot otherwise.