The best way to combat this is to have an active commish and give weekly payouts. I got the idea from the cafe a while back for my big money league, and it has worked wonders.
No matter how high the buyin, it never seemed to fail that once someone thought they were out of it, they would throw in the towel. Once we started a small weekly payout for top weekly score (2% payout per week), I am able to keep people around.
Once people start complaining and thinking about quiting, I let them know that all they have to do is put up nice points one or two weeks to get some money back.
I can not do any free public leagues anymore because the majority of them ending up falling apart or just not having the right level of competition.
My Playoff Team - Please Comment
MSchaub, DMcNabb, JFreeman, KKolb
SJackson, THightower, CWells, JForsett, JSnelling, CJennings, QGanther
RWayne, RMoss, RMeachem, MCrabtree, DBowe