Backpedal a bit and throw or kick anything handy at them to see if they will break off. Pound your stick in front of them. Most will back off. Sometimes you can get the stick under it and flip them away. Most snakes seem to turn and run after being tossed in the air.

But if they come right at you and you feel really threatened you hit them with your stick. Even if they are swimming a strong blow will break their spine. Waaaay more effective than a gun. A good stick won't jam, disturb the peace, get you accused of poaching, have people thinking your with the local idiot militia, or attract thieves.

If you hike, especially in Florida, do carry a sturdy walking stick. Before you step into that murky water or blindly into dense brush you prod it with your stick. As far as footing goes three legs is better than two. Also saves wear on knees, steadies you on slopes and when crossing water. Two sticks make a stretcher. A good stick makes a tarp into a tent.