Here is another go a squash and stretch, I calculated the distance between two points and then scaled a joint in-between.
I have added some shape controls on the rig vop, something to play with
Attachments in this post:
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20220908/11/22/2022-08-11_09-30-05.mp4
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20220908/11/22/squash_and_stretch.hiplc