I haven't seen Ed's directions, but you can also
get directions on this technique (which iI have is mandatory for all my 4H kids
to learn) by Clinton Anderson and Weaver lLathers free DVD on Horse
Safety. Go to Weaverleather.com to request your free
copy.
It is a basic training tool that can be used for a
lot of things, but mostly for disengaging those hind quarters!