Sucess. I buried two chunks and put a third fist size chunk on top of the minion coals.
I did two turkey breasts and two racks of untrimmed spares. I had a nice wisp of smoke most of the cook. All turned out great despite making a huge mistake--when I began the cook with all bottom vents 100% open, I mistakenly left one closed. I fought to keep the temps up for hours--crackign the door, the lid etc. I felt like a fool when I went to close down the cooker and noticed one vent was closed. But all tasted good.