You just wedge the breaker bar against the frame or the ground, (Making sure to take into account which direction it's going to try to turn) and bump the starter over. I've been using that method for 20+ years on all kinds of cars. It's easy and fast, and that's what counts when you're getting paid for billed hours....
Once you get the initial turn on it, you can pull it the rest of the way out with your impact or whatever method you normally would.

