Congrats on the course. I am sure new divers will enjoy.
But it's hardly the only way for new divers to experience neutral buoyancy.
I took my 18-year-old neice and nephew in the pool the other day for a DSD (no prior experience). I gave them the orientation, showed them how to use an inflator and explained exactly when to stop releasing air from the BC for neutral buoyancy. They were neutral from the first minute -- swimming around the pool like fish, having a blast.
So easy and no special equipment required. Beats me why some instructors make it so hard.