Here are a lot of pictures of my Little S set up where I have stood at the shoulder and applied sidepull, leading and direct rein aids trying to get views of the action of the piece. Some soft and some very exaggerated moves just to see how it acted.
My camera broke, and just got a new (used) one this afternoon and hurried to get photos before dark. I think I'm seeing pretty good sidepull action, pushing the nose from the other side without tightening around the entire nose. However there well could be effects I'm not knowledgable enough to see.
Does anyone see any severe actions of this, I have thought this was a mild hackamore/bit. It is kind of unusual looking with the headstall attaching to a s-loop instead of a ring. I've been very comfortable riding with this for a number of years now, and the manufacturer describes is has having very little whoa to it.
Hard pull straight out to the side
Lateral flexion (neck bend)
No hands on the reins at all
Exaggerated side pull
Pull back with both reins
Both reins relaxed
Lift and direct
Very up and direct
Grazing underchin view