The grigri might not work how you imagine it does
https://www.youtube.com/watch?v=We-nxljgnw4
This video is also good, to show to people with non-approved belay techniques
https://www.youtube.com/watch?v=jKe72j_mBlU
https://www.youtube.com/watch?v=We-nxljgnw4
This video is also good, to show to people with non-approved belay techniques
https://www.youtube.com/watch?v=jKe72j_mBlU