Stealing from the SB is extremely profitable, and if there's a tight player in the BB I will raise any two cards from the small blind. The fact that you're out of position doesn't factor in at all because you don't need to win any money postflop to show a profit from the steal. If you raise to 3xbb, and he calls 35% of the time, you can check/fold any flop and still win money.
But of course, some of the time that he calls, you'll have a real hand. Or at least will flop one. So there's still a chance to win money postflop - but the only way you can fail to win money through steals versus someone who isn't a really solid player or a calling station is if you start spewing postflop whenever you get called.
For reference, this is what a 35% hand range looks like:
... and this is 50%: