I try do to as little as possible when stoned, so I will never smoke before things like work or situations where I actually have to think and talk.
So when I know I'm not doing anything for the rest of the day, wether thats 11 o'clock in the morning, or 11 o'clock at night, I will always pack a bong and then smoke a joint. Rinse, repeat, as many times as I feel.