Ah, but we try to run things a little different around here. We have a lot of top level players, and most everyone is open, honest and helpful. :)
Some players aren't going to agree with what I'm about to write here, but please keep in mind that my SNG ROI on Sharkscope has been ~ 50% for seven of the last ten months.
Sharkscope
If you want to be one of the best players in this arena, you'll need to use the same tool that all the better players have. It's very helpful to to know which players are winners and losers as soon as you start the game.
Bankroll management
Follow the bankroll management guidelines. This is critical, because if you're playing good strategy you will bust in the 10th through 7th spots fairly often. And it's not at all uncommon to have a 10 or even 20 game non-cashing streak. But that's OK because winning one or two of these tournaments will make a very nice improvement in your bankroll.
If you aren't able to set or follow bankroll management guidelines, you have zero chance to make it in poker, no matter how good you are, so you can save yourself some time and stop reading right now.
Tilt control
This is much easier said than done, and even the best players struggle with this from time to time. Tilt is difficult to identify, so just set a stop-loss for yourself. For example, if you have a $600 bankroll and are playing $11 45-player SNGs, commit to ending your session if you lose 10% of your bankroll ($60 or five straight games in this example).
Starting Hands
Play only premium hands. Watch your hand statistics and make sure that you're not seeing more than 10% to 15% of the flops. Other than possibly in the first couple of blind levels, there's just no valid reason to play many/any speculative hands at all. I will even go as far as to say that these games can be won without ever playing suited gappers, etc. Quite simply, the stacks aren't often deep enough to give you the implied odds that you need to flop a straight draw, flush draw or two pair.
Usually raise or re-raise with A-A through 10-10 and A-K. Usually raise or call with 9-9 through 2-2. Usually raise with A-Q. Don't call raises with other hands like A-J, A-10, K-Q, K-J, K-10, etc. I realize this is very limiting, but these hands will cost most players a lot of money over time in SNGs.
Set-mining
Always try to see a flop with any pocket pair. You'll flop a set 1/8th of the time, so you want implied odds of at least 10:1 to make set-mining profitable. For example, let's pretend you're in the small blind for 30 chips, and your opponent raises to 180. It'll now cost you 150 chips to make the call. You need > 10:1 implied odds, so this means that you and your opponent must both have at least 1,500 chips back for you to make this call. If not, just fold. If you call and then miss the flop, just check-fold. The stacks simply aren't deep enough for fancy moves most of the time.
If you flop your set, don't worry about a flush, straight or bigger set. There's not enough time or chips to escape in these two hour tournaments. When you flop a monster like a set, your goal needs to be to get all your chips into the middle. This is usually done most effectively by leading into the raiser, instead of check-raising.
Position
Try to play only in position, and nearly always raise when you enter a pot.
Raise amounts
Make your default raise 3x the big blind. If there's a limper in front of you, increase to 4x, and use 5x for two limpers. Once you and/or most of the players yet to act have < 20 big blinds, decrease your raise amount to 2.5 big blinds. Once you and/or most of the players yet to act have < 15 big blinds, just push all-in. Don't be the player who has 12 big blinds, raises to 3 big blinds, then folds to a re-raise. That is generally a bad policy in SNGs.
Obviously you can make some exceptions. For example, if you're holding A-A or K-K and the most aggressive player at the table is seated after you, just raise to 2.5 big blinds and hope he pushes you all in. :D
Defending your blinds
Don't do it.
Just fold unless you have a premium hand. You'll make more money in the long-run by not playing marginal hands out of position against a pre-flop raiser. Think about it. It's like swimming upstream. ;)
Bubble aggression
You'll usually make the most money or earn the most chips in poker when you're doing the opposite of the rest of your table. Since many players tighten up as the final table and money bubble approach, your job is to do the opposite. Two thirds of the players will be gone by the first break. So you'll have almost exactly 15 players left when the break ends. This is when many others will tighten up, so this is when you'll benefit from cranking up your aggressiveness.
Showdowns won
Keep an eye on this statistic. If you aren't winning somewhere between 75% and 100% of your showdowns, then you're probably not folding enough.
That's all I can think of off the top of my head, but it should certainly be enough to get you ITM (in the money) approximately 15% of the time.
Good luck!