Bag Hooks in Trunk

I currently have the cargo net with my prius but find inserting and extracting the grocery bags from the net a hassle. I know that the Toyota Celica has these nifty plastic bag hooks in the trunk that keeps everything in place when driving. These plastic hooks are located where the cargo net clips go so I was wondering if they are interchangeable. Can I get the hooks and then swap them out when I would like to use the net. Has anyone tried this or know if this can occur?