Well, it depends... on the table, on the stacks I look for some good spots to steal the blinds, even if I have 72o it doesn't matter, because people don't want to be blown out of the tournament with marginal holdings, so they will fold a lot of hands like KJo, low pockets and etc. If table is tight, than go for it, if someone fights back, let it go, if table is more agro, be tight yourself. Simple strategy for bubble play.