Originally Posted by cliffcarter
If you use wood chunks in the charcoal ring place them on end, if you lay them down they will light the charcoal ahead of the main fire and make it more a bit difficult to maintain even temps.
My only complaint using "the fuse" with chunks was the flare ups I'd get if I had to open the lid to shift the cooking grate/clear ash/foil/etc. That's one of the reasons I started using foiled chip packets instead.
Another plus to using the chips, for me, was the convenience of trying different wood combinations in a steady, controlled smoke without burning down whole chunks. It comes in pretty handy when I do a butt, which I use equal parts apple, hickory, and cherry.