The sling figures strongly in Inca legend.
Viracocha, the chief god, uses it frequently. There is mention of him on some earlier postings in this forum eg.
Viracocha and his firestone:
http://slinging.org/forum/YaBB.pl?num=1335391379Also the Thunder god, Chiqui Illapa (there other names for the same character).
Ayar Cachi is a personage who causes so much trouble with his sling that he is shut inside a mountain.
Not only males use slings, mama huaco is a female character in the origin myths who is described using a sling.