Thanks for the advice folks. Update already.
Went to school today, drove up mind you. I engaged the P&G techniques at places where it was certainly useful. But about 10 mins from the school, I thought about the idea that many Prius people do with P&G, they dont exactly coast, they let their foot off the pedal and minimally apply pressure as this extends and the deacceleration doesnt seem too obvious to other drivers and saves work. I put this to use and this very gently applied pressure on the throttle, and FE numbers like 45, 50, 36, 30, 64 mpg showed up...and she still kept on going...about 30 mph! I'mma call this the "magic" spot!
it was about 1,200 rpm on the tach. with CC on its usually at 1400 rpm...200 rpms make all the difference in FE with such a big rig with a huge engine in 'er.