Oh I use degrees of pressure all right, but the four phases, as described by Parelli, is a different thing altogether and, in my opinion, does not involve feel.
Why would you assume that I don't understand four phases; did it not occur to you that you may have misunderstood my answer?
The four phases in the Parelli sense use four different signals, and strengths of signal each phase, which has to be confusing for the horse, particularly when all four are used to teach one response.
What makes anyone think that if one has to go to phase four to teach a horse to back up, for instance, that the horse will automatically recognise that phases one, two, and three were connected in some way to phase four, and that he will have learned that he must respond to phase one in order to consequently be spared the other three?
It makes no sense at all to train a horse four different cues for one task, allowing him to misunderstand, or ignore each previous one, then have to train him 'backwards' to allow him to learn that phase one was what we wanted his correct (achieved by phase four) reaction to in the first place.
I use one phase, that is to say one signal/cue/call it what you will, with varying amounts of pressure according to the learning ability of the horse and the speed with which it complies.........therefor, if I have to use, on a scale of five, three 'units' of pressure, with the same cue, consistently until I get the correct reaction, I could reasonably expect that horse to need only one or two units to perform the task the next time I ask, provided my feel and timing was correct in the first instance. Equally, the next horse may need only one unit of pressure for the same result, and the next may need more.
What I don't do is change the cue and, therefor, the goal posts, each time I ask the horse to perform an identical task.............I ask him again the same way I asked him the first time, increasing the pressure until he gets it right, then rewarding him so that he associates one cue with one action with one reward. Thereafter, he, having learned that one cue means he must give one reaction, will be more keen to give when asked again, so all I have to do is reduce the amount of cue/pressure to hone his reaction...........I don't have to teach him the first three phases in reverse.
You are right in one sense...........I will never understand the need to use four phases to teach a horse one action.
Feel, for me anyway, is not a tangible thing to be felt through a rope. For me, feel is the ability to sense the energy changes within the horse, and to be able to anticipate his compliance before he decides or learns to give it, so that my timing of the release and the following reward may have a greater impact upon him.
When I'm loading so-called difficult horses, I can feel the energies fluctuating in the horse, and that is what allows me to judge when to ask for something, and when to accept that the horse is not ready to give.
The best way for me to describe that feeling is to say that I become totally tuned to the horse (to the point where I am unaware of almost everything else around) so that I imagine I am in close physical contact with him, and I'm able to bring him with me when I move up the ramp. Sometimes I don't even need my eyes to be open.........it's almost like being enveloped by the horse.
For my part, I try to create a field of energy which (hopefully) draws the horse to me, allowing us to achieve together.
That 'feel' helps me in all areas of my associations with horses and lets me keep things simple and progressive at the same time.
I never 'shout' at horses, either with my voice or my physical presence....I think that would only serve to upset and confuse them, and would certainly affect their trust in me.
That's only my interpretation of it...........drawn from my own experiences; I can't begin to imagine how a horse would see it, but it seems to work.