How often do you clean your live wells ??
What do you use to clean them with?
What is best product for keeping fish alive in well?
And on a side note, do you ever clean your weigh-in bags ?
i never clean my LWs, but the best product for keeping fish alive in them is water and dissolved oxygen.
You can buy additives to help with the o2 carrying capacity and cool the water in hot weather but most of the year you don't need to add anything, just run the aerators.
I don't add anything unless i have a fish that is stressed from some sort of trauma from the catch like tongue hooked fish. In that case odds are against you whether you add anything or not.