You have a point nrhareiner.
But that is the way your horse is trained, in the end it really all depends on your horse. If you and your horse can do everything without them why decide to train with them in the first place????
It is really simple. They are used to make the cue as light and subtle as possible. I do not want to have to push hard with my leg. I do not want to to have to move my leg very fare to change my cue from shoulder to ribs to hip. My heal is about 2-3 in wide. My spur is all of 1/8th of a inch wide. It takes much much less to get the horse to move. I can get my horse to lope off from a walk with must my calf. Do not even need a heal or spur. Why? B/c she knows from training that if she dose not the next will be a light tap with my spur. Now she does not even think about not doing it. I never let my horses think they have a choice and in the end I have no argument about anything.
just wondering. Yes it make movement sharper but did you ever wonder why. I honestly don't know but in my opinion would be that the pressure is more intense and my hurt a little more?
Does it hurt more? Well Would you rather me hit you as hard as I can with my fist or Just nudge you with my finger? My fist is larger will cover more area will disperse the pressure but I am also using more force. OR I can take my finger which is very precise put it on your side and give a light push. That is the difference between a heal and a spur. I do not care how light you think you are with your heal I will bet I am even lighter with my spur. The horse moves immediately no question and at times you need that. If I am coming around into the middle of my large fast circle and I need my horse to move over a bit to make sure I am hitting the middle I can put my inside leg on the horse and they will move over even at a fast lope.
But then again the cues is cleaner, idk . I guess it depend on how you use them. But I still don't llike them.