How do the various soft tops do with mud? Where I live we only read about rocks bigger than a baseball so I primarily play in the mud. Do the tops clean up well? Is any particular material or brand more prone to staining? I don't really intend to pile heavy mud up on it (I'll be swapping back and forth with the hard top) but I'm wondering about how it would do if I did put a coat of goo on it. I almost forgot, I'll be getting a black top. Thanks in advance!