during the early rounds of a s&g i watch who will fold their blinds to the small raises. theres alot of people who will call the 3xBB bet with any 2, or any 2 suited from the BB. then when it gets later i target the people who arent defending their blinds.
if im in the SB, and it folds to me i usually try the 3xBB once. if i get called, my steal attempt in that situation moves to ALLIN or fold. sklanksy wrote an article about it for cardplayer, A8o.
here in the general theory forum the results were expanded
here
theres more value in pushing then there is in folding a variety of hands. im yet to be called doing this and lose, but im sure eventually ill run into AA or KK.