A maze like that is fine for a stick burner or a Backwoods, etc, but it's not needed for a WSM. As Michael said, I use briquettes in my WSMs. I've used lump with good results, but I get a longer burn with briquettes.
How long did your WSM burn before you had to add fuel, Tim? How much did you put in to start and how much lit did you add? I always fill the ring as full as it will go and then add lit charcoal in a depression in the middle. For my 18.5" WSM I add 10-12 briquettes or the equivalent amount of lump.