You almost have to be a bit pushy when you're the large stack, but not so much that they all notice. Don't do it every hand. Go in a hand when you get a hand you'd normally play and if no one seems to hit, act like you do, or atleast make a feeler bet or two to see how strong they are. You have the big stack you can do stuff like that, and more times than not it'll work for you. I'd recommend acting more like you hit the flop times when you raise preflop. At that point you've already got momentum, so the other players are more likely to fold.
That's the way I reach the final tables, you've gotta have some guts and be able to be aware of you're up against and whether they might have something or not. If someone does realize you're doing this and counters you with a raise, fold, but wait until you're in a hand with them again and you catch a monster, then act like you're trying to buy the pot. That usually works out nice.