I'm really enjoying reading this thread although it hasn't been responded to in a while. Forgive me because I don't always remember who posted what responses. However, someone on here stated about how the HS works. I agree, my own personal story is I've had times where I experienced a very perceptable reaction to when the HS was moving on or in me. For me, I've seen flames (that fire of God you're talking about) in my minds eye, even others have had outside visions of flames as they watched with their human eye but seen something in their minds eye where thy saw flames as well. I've had physical reactions where my body will shake, I will feel very heavy like I ran a marathon and can't stand on my legs any longer. There have been other times when I was feeling washed, cleansed, light, like a gentle spring rain doing it's job with nature.
To answer your questions about whether the HS works strictly within the confines of seasons or waves as you speak. In the book of John the HS again is described as wind and it goes whichever way it wants to, and nobody can direct it. So yes I think there are times when the HS follows a seasonal pattern (not always matching an actual physical season like spring or winter) but rather you may be going through a season (however long it lasts largely depends on you, but not totally) where you are being stripped of negativity or pride or fear, or whatever (we would call that a fall season) but then you can move into a very nonactive season where it feels like nothing is going on in your life (winter) and then things start picking up and everything seems like it's going good or right. However, the HS isn't limited to working in this method only. There are also other symbologies, numbers for instance, pictures, etc. I used to see my favorite number for about 1 1/2 years. Everytime I was dealing with decisions or something in my life, I would know that something was a right decision number one because of the peace I would sense inside, and then I would get these "confirmations" outside because this number would pop up everywhere in unexpected places and ways. It was the number 8 which has historically symbolized new beginnings. I don't stricly use that as a method of measuring success, but during that time period it was something the HS used to help guide me. I haven't seen that number in quite a while.
In any event, I digress. Back to your questions. Yes, it has been my experience that the HS can cause a physical reaction in a body but it is not constant (nobody could handle living that way all the time, honestly). It's that light, energy, photon thing you described before. It can be a tangible experience. And because we are each differnt that physical experience can be very different between individuals, and also because the HS is so differntly faceted that he likes variety too.
I hope I added something to this discussion, it's a very interesting topic and I love the analogies and descriptions that have been given. I love the description about the tension in the paradox and that we aren't supposed to be deciding on which end of the hire wire is right, but that the truth lies in the inbetween space in the paradox. It's cool!!!