This makes a mess, but, I have taken to spraying what I call 'Pig Honey' into my cooker, I spray it with a spray bottle through the vents. It adds moisture to the cooking environment and puts a nice glaze on the ribs. Just stick that nozzle into the opening and spray away with a coarse mist.
me: I don't drink anymore
Yelonutz: me either, but, then again, I don't drink any less