This page has some good information on how to use the different Phoenix shooting bags.
Long Range Shooting Techniques & Positional Shooting With The Phoenix Shooting Bags
Tony Bag Of Donuts TBD
How to brake in the Bags
How to use the TBD and medium Ridge Runner as a rear bag
Extra small rear bag and medium Ridge Runner
TBD Bag shooting off a tree limb
Downhill shot with medium Ridge Runner and small Ridge runner