There is a point that is consensus about building your bankroll. Tournaments turbos are not made for you to build your bankroll.
The variance that exists in these tournaments is very large and makes the game not practiced the right way. One strategy I use is to play regular tournaments. I think good indications are tournaments 25 or 50 cents, to 45 or 90 players or even the $ 1 tournaments with 45 or 180 players.