Relying on a computer for surface intervals

Here's some more info about Taravana: http://en.wikipedia.org/wiki/Taravana

Medical studies have been done recently in Italy and there are some articles in italian.

Alberto March, Marco Bellani and other recognized world class spearos have had bends associated with taravana.

Here's a good one in spanish:
http://wetdoc.5u.com/notas/taravana.htm