An easy solution - aluminum foil covering on the water pan and then the juice. I never let it get low enough to get crusty - but it does get a bit thick because of the sugars in the juices. It usually just takes the kitchen spray attachment pressure to wash it right out that way.
I always have a spray bottle of apple juice and direct spray the meat when I am adding more wood chips.
It turned out real moist. I took one breast out of the sealed package and sliced it very thin. Layered it in a corningware dish and alternated just a touch of honey and a touch of butter on each layer.
Turkey sandwiches with bacon, lettuce, pepper jack cheese and Vidalia onions topped with Chipotle Mayo was a hit.