Thanks for the comments, gentlemen.
Frans, I was first exposed to this "technique" at a workshop by Freeman Patterson as a way of playing, getting in the mood, unblocking. At the time I was also reading Einstein and other works on Relativity and the cosmic speed limit, ~300,000 km/sec. One of the books discussed the idea of what the universe would look like traveling at light speed, how it would basically collapse into a single point, how time would "flatten" future and past together. For some reason, I joined that idea with multi-exposure images as a way to "see" all sides of a subject at the same time, so I try it when I am up against a challenging subject as these junipers are for me. Also, more trivial, taken at mid-day, I like the way the light is softened, the background abstracted, and yet there are recognizable details in the image.
John, thank you for those references; I will check them out. And I take your point about the effort required as well as your critique. I also agree that I need more images. I have been looking for a suitable tree on my walks and I need to find one that I can fully walk around without having to climb up an embankment! One would think that should be easy with about a million of these trees per square mile here in AZ, but it is mountainous terrain and there's lots of "stuff" to get around! The D'Agostino trees are good examples of what I am trying to say. I am very excited to examine the links you provide.
In closing, my overall rationale was to photograph in an area I travel through every day on auto pilot, without really seeing, and stimulate some creative juices.