For me and our type of riding a few of those ruts on the bottom it would be nice to leave them, maybe knock the center down a little. They have a trail around them and a little mud hole on the trail to play in that doesn't smell like sewer is alright.

A lot of them I would think a small disc would work pretty good on if it was done at the right moment which might be the hard part.
I have to add the water pick from this years ride, someone always has to try the cold water.
