Isn't a Little S like that of a mechanical hack? What makes a mechanical hack what it is?
I also ask because I am thinking of getting another bitless option in the event if I ever need one, I have one. I'm thinking of getting a sidepull, because my riding halter, while great for my pleasure rides, won't do so well I don't think for a horse who needs one all the time (but I could be wrong).
But anyway, thank you for answering my questions!