Charcoal not the culprit as this was a one day affair.
The pics couldn't have turned out any better for making me look REALLY stupid and only shows the location of one of my two rock lights. The real culprit is hiding behind the guy in the yellow rain coat. Large rock on right + deep hole on left = a flop that i almost made it through. The front tire made it but the rear didn't.
One person with a strap would have been all it took to keep it from flopping or maybe a sharp left and alot more skinny pedal.
This was at Washita on one of the logging roads.