[Focused]

Hi, I was wondering how damaging to my game/bankroll my bubble play is considering I don't use ICM(at the moment). Also how can you work it out quick enough in a game, if you use a poker calculator, as it seem to show in the introductory SNG thread. At the moment, I use my instinct, notes,my stack and other peoples stacks sizes to make my bubble desicions. I am a long term winning player but are my well educated guesses hurting my game? Maths has never been my strong point, but Iam going to try to learn ICM. Merry Christmas