As Da Commish, I just got sick of the accounting hassle when we charged $1 trx. I contributed the proceeds to the end of year party anyway. So now, I just charge everyone $10 and do all the trx you want. It has increased activity and at least I feel better about all the time I spend. Usually put it towards league beer anyway but, I don't have too. Everyone knows how much time I put in and they are all very happy with it.
But, when your WW system is complex such that Commish has to do stuff (like mine) something should be charged. No one else in my league wants my job because they know how much I have to do to keep everything fair and everyone happy.
CheeseWhiz is a great substitute for plazma.