Working with 2 Catalyst 6509 conected via a LACP with 4 ports 1G obtain a very imbalanced traffic distribution. The etherchannel is working with default configuration.
The traffic flow is from clients to servers and the clients begin the connection.
Yes you are on the right track just try the others until you find a good balance , it will never be totally equal across all links. Think about how traffic is flowing , is all the traffic going to a single destination tc... then you probably don't want to use destination ip as the criteria. The settings may not even be the same on each end the link .