Jim - this was an interesting and unexpected read. While I am familiar with the concept and do practice pre-visualization in my photography, I had no idea pre-visualization is so passionately embraced by Carmel photographers; or any photographic community, for that matter.
I learned and have applied pre-visualization throughout my 30+ year career in television and video production. Storyboarding is a standard practice in the production of any short video message (e.g. commercial or PSA). Since a 30-second spot incorporates a series of shots strung together to communicate a (hopefully) meaningful and compelling message, I imagine that process to be at least somewhat similar to how a Carmel photographer would practice the technique. The goal is to envision the shot and then go about doing whatever is necessary to actually make it.
Pre-visualization is not applied in the same manner in live sports coverage - my area of specialization. It's a useful tool when determining where to place cameras for game coverage. While the outcome of the game is uncertain, pre-visualization allows one to guarantee having a good angle for live coverage of important action anywhere on the field/court of play.
Experience can allow anticipation of very specific shots in live sports coverage. During the fall and winter months when temperatures fall, the sweaty overheated head of a football player will shed condensed water vapor. Any experienced sideline camera operator has that shot in their hip pocket, so to speak, as a closely-contested game moves into it's final stages.
The way I practice pre-visualization in photography is similar to how I deploy that tool in my work as a producer/director of televised sports coverage. I put thought and effort into being in a good location and then rely on my in-the-moment analysis skills to make the most of whatever photo op presents itself. I'm not often pre-visualizing a specific photo. I'm anticipating where wildlife or birds will be, where the sun will be in the sky, the direction of the wind, and the background against which I'll be photographing animals.
If I don't know the location - this will be my first visit - I'll do an on-the-spot analysis and select a palce to setup where light, wind, environment, and background will contribute to a good photo...assuming the animals cooperate. In short, I'll setup where I'd like the animals to be. I don't particularly care if they're going to be someplace else, especially if that someplace else means they'll be in poor light, an ugly environment, or fronting a distracting background. Those are not photos I want to make. If the animals cooperate and come to where I'm setup, a good photo is a likely outcome.
It's an approach I've taken in the limited sports photography I've done. One of the few college football games I've shot featured my home team versus the #2 team in the country in FCS. At the end of the game, the home team had the ball and needed a touchdown to win. I setup near the corner of the end zone where they were trying to score. I chose to be along the sideline where I might have the home team, home cheerleaders or an official signaling a score in the background. This was where I wanted to be if the home team pulled victory from the jaws of defeat at the last moment. Fate smiled on me that day.