Heads-up SnGs - fundamentals?
I've been playing live tourney/cash for 4 years and have dabbled online. My end-of-tourney heads-up play is profitable in terms of win percentage, regardless of anything but enormous differences in starting stacks, so I have confidence in my end-game.
I'm looking to try some Heads-up SnGs online (anywhere from $10 to $100 buy ins) and am looking for advice on fundamental strategies / counter-strategies for these online games (and Heads-up SnGs in general), and beyond the fundamentals into advanced strategy.
I've had a look through poker literature's usual suspects, but can found little dedicated to heads-up, and almost nothing on heads-up SnGs. Web searches throw up random articles and threads, but it's mostly shallow and/or incomplete. I might have expected something in-depth from the heads-up giants (Hellmuth, Ferguson, etc), but again it's only tidbits.
So, 'The Theory of Heads-up SnGs' anyone?
Thanks a million!