How about the diving club, QSAC? Considered that?

There's loads of sports clubs and stuff. Get yourself down to Carrefour (or other book store) and get hold of a copy of the Explorer Qatar guide. It's got a whole section on sports clubs and societies and stuff.

I think the rule here is not to sit in your digs waiting for opportunities to arise; you need to explore these things, decide what you like the look of and grab the opportunity with both hands.

Good luck!