Realistic motion

I have a bone system for a model. There is a part of this model that is like the trunk of an elephant. I'm looking to make the bones inside of the trunk of this model have more of a natural look. I know that flex modifier does work on bones, is there a way to make the rope reactor work on the bones or would flex work better. Also Flex seems to require a force such as gravity acted upon it. The ultimate question is, does Torque recognize the flex modifier with forces.

Hope someone has an answer.

Thanks! ^_^