delta 3: I think the P in POB is persons, not pets. (Do you have a blue hawian shirt and a KH4?)
How do the helipods work?
The manual states that the skids are only designed to bear weight from below and to put weight on top of them will be detrimental to the air frame.
So the issue is the baggage coming free over the top of the belt, rather than the quality of the restraints. I guess it will be difficult to maintain control with 20kg of louis vuitton in your lap.
I generally make judicous use of fat straps and infant belts to secure the baggage if it don't quite fit.