Don't pull up as much as pulling back at the bottom of the stroke, like you're wiping your shoe.

For steep climbs, learn how to stand and get good at doing it for a long time. This is like having a lower gear on a fixed, and you can tackle long steep hills a lot better than you would imagine. Watch Lance during the Tour, he would stand and crank for miles at a time up the steep mountains. But it takes time to learn and get conditioned.

Az