Worm rigging, stretching geometry

I’m rigging a worm. In Maya, if I use a wire deformer, which if different than moving and deforming an object along a path, I can stretch the model as needed, with is what I want in this case. How can I do this in Blender? Also, I would like to create some kind of blob wave on the body that moves from the back to the front, as worms do when they move.

worm

Hey, You could use a Spline IK - This screen shot should show everything, there are 3 elements, a curve, an armature for the curve, and another armature that controls the thing - that one (2 bones) are 'Hooked" to the curve.

I’ll give it a try. Thanks!