I don't use chisels at all, just the awl. And since I'm so right handed that I can't even scratch my nose with my left, I put the project in the horse with the front to my right. Stabbing straight through takes some practice, but I have never seen the need to use chisels and the use the awl, even on double layers of 10oz. Also, I was taught to insert both needles before pulling any thread through, to eliminate piercing the thread. YMMV