May be this can help.
Loquitur
I couldn't get crispy skin on a KK chicken:
Until I started putting it in the frig, uncovered, the night before cooking.
Then cooking it direct, high in the dome, at a temp over 400.
(I don't open the lid until I'm ready to take it off and it comes out perfect for me this way)
I don't think a couple of hours in the frig is enough to help much:
(If you do it overnight, you will definitely see a difference in the texture of the skin while its still raw)
(it looks weird but it comes out great)
I have also heard of people putting a very light dusting of cornstarch on the skin before cooking.
( but I have not tried that)
mguerra
Re: Crispy Skin Be sure to cook chicken direct, not with a heat deflector. Indirect yields rubbery skin.
Syzygies
Re: Crispy Skin Nice idea, it reminds me of letting salmon develop a "pelicure" in the fridge after brining. I've tried the hairdryer approach with mixed success (it helps e.g. deep-fried Thai duck), I'll have to try this. We prefer our chicken at 500 F for half an hour, direct main grill over well-developed coals, after
a light brine.
http://www.seriouseats.com/2011/12/the-food-lab-ultra-crisp-skinned-slow-roasted-pork-shoulder.html