Robertsson,
Two sims are done per week. For each sim you download files, arange lines and send the file back. The total process takes 10 minutes maximum. The other activity component from the GMs is writing a 500 word make believe article on the teams performace, rumours etc. which is done once a week and send to the same email address. All of these articles will be put in newspaper format just for increased league activity. Finally there is the time taken to respond to trade offers and make your own.
Everything else is done by the commish (me) and one/two other GMs who volunteer their time.
Honestly I would say that you could spend as little as 1 hour per week on this league and still scrape by (sending in lines, writing a decent article and responding to trade offers). If you have any other questions dont be afraid to give me a shout on my email.
Thanks
Jim
www.members.shaw.ca/SFEL/Index.htm