In Reply to: Expat working or volunteering? posted by Expateach on Tuesday, 27. March 2012 at 10:22 Bali Time:
This won't help you with diving , surfing, swimming, but it might still be of interest to you.
Contact The Green School which is located near Ubud. One of the founders, John Hardy, is a Canadian expat. They have teacher accommodation , and might be interested in a visitor :)
http://www.greenschool.org/