i thought most of us on this board actually put the clay flower pot bottom into the water pan... that's what i do, or sand then cover with aluminum foil. both act as a heat sink that doesn't evaporate away. anyway, i've never tried doing pork butt with water quite frankly... so i've only known of a strong bark i guess... but I wrap my finished pork butt in foil and into a cooler for a couple hrs, as described on various threads.. and so when i pull, the bark is totally softened and flavorful... i gues if dont wrap it, some parts of bark would only be good for mixing in w/ beans as they would be rehydrated.