I did two whole butterflied chickens this weekend. On one I left the skin on and the other I removed the skin (my wife can't eat the skin because of her weight-loss surgery). I injected both with apple juice about 3 hours before cooking and covered the skinless chicken with Saran Wrap while the chicken with the skin sat uncovered in the fridge.
I cooked the chickens at high temp (311-341) for 1-1/2 hrs to a temp of 160 in the breast.
Now, I have not tried the skinless version but my wife absolultely loved it. I ate the unskinned chicken and the only complaint I had was that the breast meat was a little dry...I'll inject more apple juice next time.
So, my point is that I agree with Doug...either brine or inject. If you inject, I put a full syringe (2oz) in each part of the chicken and I would put about three syringes in the breast.
I've also read a thread where someone marinated the chicken for about 4 hrs in Italian dressing AND injected with apple juice. It made for some very juicy chicken.
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Mark WAR EAGLE!!