I don't think anyone is arguing that a snorkel is for continuous driving in deep water. To me, where a standard snorkel really comes in handy is on the trail when you briefly find an unexpected low spot, or at a water crossing when you're nose down, first dropping in. As soon as you hit the river bed and level out, the front end points back level, but dropping in, that intake is one of the first things subject to get splashed after the bumper and headlight. Such instances are often enough to put water in a stock intake location, but an inexpensive snorkel can be all it takes to put the odds in your favor.