I don't use a water pan in mine but, at times, I do add a foiled second grate blow the cooking grate with some holes in it. This works as a drip pan and heat diffuser. If you use a quality lump charcoal you are actually burning 100% wood with no binders or fillers like the briqs. The lump alone can give a nice flavor to your cook. The chucks add that extra touch, though.
Blues, BBQ and Homebrew!