Long story short: Don't drive where a pond used to be.
7000lbs + E rated street tires + 70psi + limited slip rear + open front = stuck
Another '09 Super Duty pulled me out. The driver's rear tire was off the ground and the truck was starting to lean pretty good. I decided to quit because it was pretty obvious I wasn't driving out of this one under my own power.
1st stuck in the new truck.