I don"t plat MTT SNGs - I just stick to STT SNGs on stars, and turbos only. PLaying 6 to 8 at a time, I make profit by sticking to two gears only...... tight as a gnat"s chuff until down to 15xBB, then shove/fold. Works for me - boring, but profitable.
The only reasonable advice I can think of for any SNG formats, is don"t try and play poker - there just isn"t room.