Cool, good For Susan for getting the word out...
It really IS a neat concept.
We kind of have a PP set up here, there is a few acres in the center we fenced off to let it grow up in more grass... the horse have a track all the way around, then trails up through the woods and trees, (They have to cross over a ditch that runs the length of the pasture) and a nice hard sandy gravely road down the other side...
Every evening they do their ritual of loping up and down the tracks... They get the horses two house over running around too... lol They do a lot of trotting, loping and a few spurts of full-out gallops... Some bucks and twists etc.. Goes on from 5 mins to 1/2 hour.
The rest of the day is spent grazing and strolling... ;)