If you have not read, please refere to following article on true technique for Pulse and Glide used for Prius. Since Prius and TCH have same hybrid technology, article should apply to TCH as well.
http://www.cleanmpg.com/forums/showthread.php?t=1224
I am new owner of TCH and I am also learning Pulse and Glide. So far I am able to glide with speed around 50 KMH on straight streach about 3 kms. My problem is I am in small city and this is the longest city road without any light or turn.
I am pretty sure lots of people will respond to this post with glide time of more than couple of minutes.
Thanks and have a wonderful hybrid driving experience.