Lack of a heavy smoke flavor, smoke ring, etc. is a common ‘complaint’ around ceramic cookers, and I believe that it is a result of the high fuel efficiency of ceramic cookers - you’re just not going to burn a lot of wood in a low-and-slow cook like you would in a stick burner. That said, I don’t believe in the no-win scenario, so...
...tell us more. I assume you put the log on top of lit lump and under the diffuser? How do you get it to burn/smoke effectively? I ask because I’ve noticed I need to run my Large BGE at 250* or higher to get chunks, placed directly on hot coals, to ignite and burn correctly, but I prefer to cook at 225*, so it’s a tad annoying.
Many years ago I bought a bag of wood chunks and followed the instructions on how to make my own lump charcoal buy filling the BGE with chunks (no other lump charcoal added), igniting them, letting them burn for a period of time, and then killing the fire. Result was ‘lump’ that I used to cook some ribs, and the smoke flavor was strong IIRC. I need to try that again. Anyone else try that method?