Of course it's been considered, but nobody has really bothered. There really isn't a good way to do it that wouldn't restrict the airflow that helps keep it cool. The factory splash guard w/ the rubber flaps on the side does a pretty good job of keeping just that, splashing, from really getting to it. If you take it and go blasting through a puddle or the like, much less a nice deep mudpit, that's not what it was designed for, and you take your chances doing so. Pay to play...