Pictures as requested
I must apologize for my filthy truck!
I simply removed the bolts used for the fender flares and put them back in their same holes to install the flaps (front and rear).
I have discovered I need to add a third bolt to both the front and rear flaps on all four corners as the inside edge (toward the midline of the truck) tend to flap more than desired. I just haven't gotten around to it yet.. but I would highly suggest it.
Up close view of front bolt locations:
Up close shot of the rear bolt locations: