MANY years ago we were in Baja watching the gringos go through a water crossing near the top end of the Sea Of Cortez where the CO River makes it's exit. The water was running very slow about 2 ft. deep. A group of Mexicans were off to the side watching all the action and laughing when vehicles would stall and have to be pulled out. Soon after, they got in their cars and p/u's and pulled up to the waters edge BACKWARDS. As they drove across, you could see the water folding in around the front bumper as they were NOT pushing water against the grill. Granted, it may be difficult to do this type of maneuver in certain water crossings and depending on water depth and speed, but yet the concept was a pretty novel idea.