I generally only play one autodraft league anymore each season (I play in two keeper leagues as Schnoogens) and this account, created way back when they offered a free credit or two for each new player (I know, I know...but don't tell me you didn't do it too!) has been persisting based on credits earned through auto leagues.
I tried the high-risk/high-injury route and in general I follow JPav's costing principles as I have completely bought into the concept. In this particular season, the injuries went in my favor and the team was just good enough for 89 wins and the title in a very competitive league.
http://onlinegames.strat-o-matic.com/team/1397934