ive always been really interested in that kind of stuff... i would definently try it if i had the opportunity...
if you want a little more information/insight about this i suggest this series of articles about it...
http://www.bmezine.com/news/fakir/20031115.html
http://www.bmezine.com/news/fakir/20040115.html
http://www.bmezine.com/news/fakir/20040508.html
the first ones the best... it talks about the origination of the Suspensions.
the second talks about the writers personal experiences
and the third about his expierences guiding others...