Worm Guard is an evolving position, with new stuff arising all the time. Here's a different way to play Worm Guard; by utilizing the "forever grip" on the far side pants leg. Let's take a look.
Here's a simple way to enter into the position. Think about how you're locking the direction they're standing in.
This simple, direct back take can work extremely well with this grip, even against a seasoned partner.
Here, you can use your worm guard hook to push your partner over, then take their back. Initially, overshooting the "forever grip" allows you to use momentum even more with the entry.