DIY assisted braking device?

If you let go while lowering someone in a canyon, people fall. Canyoneers often don't use prussiks. Assisted devices aren't used for lowering or setting rope length in canyons. Is this trick safer? Our canyon course is free at https://hownot2.com/blogs/canyon-rope-systems 👉 Learn and SHOP at https://www.hownot2.com/ 👉 Best EMAILS on Earth: https://www.hownot2.com/signup 👉 10% off ROCKY TALKIE by clicking https://www.hownot2.com/rocky