$3.30 Turbo SnGs have been my primary game (online at least) for about a year now.
I tend to play 2-3 at a time usually for 2 "sets" in a row. I do this about 3 or 4 times a week, and consistently net about +$150 a month. It is not a lot of cashflow, far from a professional endeavor but it is consistent. My ITM% is 47% and of my times in the money, 68% of those are 1st place.
Here is my basic strategy:
I play tight as hell. I'll occasionally play a cheap speculative hand in position, esp if it's a multi way pot. ex. small raise and 1 or 2 callers and I have 66 on the button, or A4s on the button I might play that if it's still in the cheap levels....but this is still pretty rare. Generally, I'm only playing strong hands for value in the early levels.
open up in late position to try and steal some blinds. Still pretty tight. I might open in the Hijack with KJo or A7o or 44 but still basically "value" hands.
Now I make my move to go for the chip lead. I usually either bust out right here, or take over the chip lead. I rarely call an all in, but I'll shove pretty wide, especially on those player's BBs who are trying to "hang on".
Usually I am the chip leader by this point and usually I try to avoid calling any all-ins unless I have a pretty great hand. (I've been known to fold AJo and 88 to a shove in some of these spots). I'll jam pretty wide though. I mostly try to let one of the short stacks take out the other since my Heads up game is pretty strong.
I frequently go out on the bubble or take it down. I rarely go out before 5th place and I rarely get 2nd or 3rd place. I pretty much get 4th or 1st in the vast majority of these.
I'm sure there are some members on here who have much better advice and results than me, but this works for me and is consistent.
Also, when I apply this same strategy to the $5.50 turbo SnGs I don't have nearly as good results....I'm a little better than break-even at those but I haven't played too many of them due to my poor ROI.