I do a bit of a mix, based on whatever works on the day.
I always try and put LO down drowsy, but sometimes I just have to rock her until she's completely asleep.
Having said that, she's been fighting being rocked more and more lately, so sometimes I put her in her cot and walk away. I think the heat her has made her fight being rocked. If she grizzles then I go back to her, and will pat, or rock her as needed.
I try and do as little as possible without leaving her to CIO. So I'll try and leave her without patting. Then I'll try patting etc.