I've been preparing for an event that I'll be hosting on Memorial Day Weekend. We are having mud races, car crushing, car jumps, a wet field from spring run-off, and an obstacle course. As usual, I'm behind schedule on the preparations. Anyway, I have some pictures at http://community.webshots.com/album/34744177oDQhcQ of how we've prepared so far. Anyone have any recommendations or advice on what I'm doing wrong or correct so far? Also, the new mud pit we have dug so far, we were having filled with mud from a pond that is being dug. Instead of mud, it turned out to be a really nasty grayish clay that looks like nothing could make it through. Should I leave it as-is, or try getting different dirt? (pictures in the album).