How to play Heads up properly...

Hi y'all, I'm not exactly a beginner (been playin 18 months or so no) and I have pretty good idea on the tight/aggressive strategies for the $5+.50 SnG's I tend to play and I end up ITM more often than not. However I really seem to suck at heads up play! Really can't seem to get my head round it!

Does anyone have some articles they can link to which give good tips on this? I seem to either play too tight or too loose, can never be sure what are good starting hands once the blinds get big. Any tips much appreciated!

Cheers :D

Theres a sticky FAQ in the SnG section of the Forum. Links you want are in there.