I don't know if you've ever heard of Harry Palmer the owner of Staredge and the creator of "Avatar" the expensive technique I did ($2,300 U.S.) which didn't work but enabled me to experience something phenomenal in my world. Anywoooo, he claims he created the Avatar Course while in a flotation tank. Google him and be prepared to hear some strange stories. I've heard of a lot of new agers spending time in flotation tanks to know themselves. Good Luck!