The second link is following the gravity box. Then I have a three link buffer zone which is not following anything. The remaining links gradually increase in "point at" value from .025 to .5. Works pretty well, although the gravity box requires a tiny bit of manual tweaking.

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.