B.A.S.S. has realesed a pretty good article for keeping bass alive in tournament conditions.
http://assets.espn.go.com/winnercomm/outdoors/bassmaster/pdf/b_con_KeepingBassAlive.pdf
http://assets.espn.go.com/winnercomm/outdoors/bassmaster/pdf/b_con_KeepingBassAlive.pdf