Kristina,
I was just kidding...I deal with mud all over and don't really bother, but mines made to be beaten. Had mud going over the roof a couple of weeks ago. Although thats fairly rare here in Socal - as you know, we don't have rain. I would get another flap. Perhaps the Yosemite Sam ones!! Those are cool.
Hey I just noticed you are in Socal...lets get out and about!!
Ed