Think about it, you got stuck going forward into the muck, do you really want to pull yourself through it not knowing where you may end up on the other side. Remember, if you do get yourself through going forward, you may have to turn around later, you have to come through the same stuff again. Also, remember you need something to hook onto to pull yourself out. I have seen a danford boat anchor modified to dig into the sand/dirt to provide that tie point.
About the battery, a winch will pull down a battery real quick if the engine is not running, so if you are flooded in a creek, get yourself out by the shortest route.
You will also need quick disconnects for the battery lines, I have used the Anderson connectors, work good and handle the high amp draws well.
On my 3/4 ton Dodge 4x4 I have a 12,000 lb hydraulic winch, can pull all day as long as the engine is running.