i win most of my money from micro MTTs, usually not the larger fields, maximum entrants of about 200-300 people
and my theory is "when you have a big stack, your game shouldnt change"
we dont want to be getting involved in too many flips
the basic concept is if opponent has 10BB or less, they are looking for a double up, so to steal from this type of opponent you must have a big hand
reasoning "if opponent re raises you, you are almost inclined to call purely on the odds
if your opponent on the other hand has 20-30BB, be agressive against them, they have so much fold equity and should be sitting much tighter trying to find a descent hand to get it all in with
so again, for 20BB we must have a monster hand to race with
Then you have other big stacks, and if you are going to get involved with another big stack, these are the people that you can harm if they play badly, but vice versa, caution should be taken because they can also harm you