Re: Tin foil.....
it doesnt matter for cooking according to renolyds so it shouldnt matter for smoking. that being said i put it shiny side down out of OCDness and consistency. dont think it matters in all honesty, same as pattern of holes, it really is more so how many holes (it was either eric from tangiers or john from CH that holed one half of the bowl and left the other half covered and it smoked fine and the only difference was that the side with holes had ash on it, other than that it was evenly burned).
the heat is being transfered from contact for the most part and the fact that heat is not a wave like light or sound makes it being shiny or matte null and void if it matters.