Shawn,
Not about wind but......This may go along with your setting up for the LR shot but was prompted by the pic of your dad setting up for the across the canyon shot. Besides I've found that if the set up isn't correct the wind doesn't mean squat at least for me.
I noticed slop of the hill. The bipod at least has the opportunity to be consistent with the slope of the ground. Do you do anything to adjust (dig/level/extend leg/etc)?
I know that you are quite experienced shooting LR , as evidenced by your article's charts and your previous successes, whereas I'm pretty much a greenie. We'll shortly see if any of your experience rubbed off.
