I count myself among the jahils :).
The parts in bold are the main points.
In simple words, there are two hidden driving modes in the Prius. Hypermilers call them "SHM (Super Highway Mode)", and "Warp Stealth".
*Note: just for the sake of this mode, a scangauge/ultragauge/torque app is highly worth it.
On the scangauge/ultragauge/ Torque app, hold the IGN reading between 13-15. You can hold between 26-38 kml depending on your speed; the higher, the better. Usually, this mode works up to 100 km/h. Even A/C use won't reduce this too much, but it might limit your top speed in SHM.
As you know, the all electric mode doesn't work above 65 km/h. There is a work around. On the device, hold exactly TPS 14. The engine will stop using fuel, but there will be no engine braking. Vary your speed between 65 and 90; accelerate at 18 TPS, glide at 14 TPS. (Just like like a standard pulse and glide, but at higher speeds than 65 km/h). You can even use A/C during acceleration; it will have minimal impact on the fuel economy.
Wish I had a Prius and a Scangauge; its almost unbearable, knowing these techniques but not having the tools to apply them :(.