How did you figure out how much salt per ice? I want to prebrine also but didn't know if I should use my standard 1/4 cup to 1 qt water (2 lb ice) or if that would be too much. How long are you leaving the birds in salt? Do you think garbage bags are okay to keep the meat in, I assume within a cooler? We're doing ours in 2 weeks. Would you please let us all know how your birds come out as far as saltiness, juiciness, etc.?