I use a chunk of Apple wood that I split it into pieces, some that are very thin and then some that are thicker. I used 3oz, and I place the thin pieces in the hotter areas of the smoke box and thicker ones in the areas that aren't as hot. I think I get a little longer smoke times doing that. I use the 125 degree phase mostly for a drying time. I usually don't get much smoke during that time. I'm probably overthinking this but the meat has good smoke flavor.