I mean time wise?
I would try to get him up around 7-10 am Pacific time. That seems to be when most users are on-line. You might want to try Friday for selling, too - because it is before all the competitive games on Saturday. Although, I find the timing thing a bit of a crap shoot in BB. It is best just to get a good idea of what your guy is worth and to list him for around that price.
Run of the Mill Canadian Manager