Hey Wolf welcome back. A couple of my friends are shamans
http://www.spirithollow.org/welcome.htm and lead vision quests which sound like a combo of the Lakota and the Taino. Although one of them is quick to point out that "no man is a prophet in his own land" they are remarkalbe and stellar people. well worth the slog.
I wish i knew how to make text into a link. later. I'm actually making dinner now for the inchinchinch, so later maybe.