I Have a 25litre bucket where I brine up for everything in one go. I make hte brine earlier in the day, refrigerate, then add the chicken before bed. Get up in the morning, and it's all done. IF there's wings, I soak a bit in water... but larger parts and whole chickens just get washed and put into Ziploc bags and frozen.
If I find anything too salty, or not salty enough, I adjust the salt concentration in the mix for next time, rather then change the soak time.