What's the "bounce method"?
IMO, the most painful part is the needle pushing through the skin, then sliding through and entering the muscle. Stick it in like a dart and it's all over with at once. By the time it hurts, it's over. The rest is nothing. It's also nice that it's not wobbling on the way in (which happens when you're slow from my experience); that hurts too and I'm sure contributes to scar tissue.