Anyone who is worried, I would say do not buy oplux for your tether. That stuff is like dental floss compared to predator or other commonly used ropes lol. That being said, I love it. I think educating yourself on how to spot deficiencies and weak points in your rig is just as important as backing things up. One aspect of my job has drilled that into my head. You inspect your equipment everytime, trust your equipment to do its job, and care for your equipment and it will do the same for you. If there is ever anything in question, replace it. The only piece of gear that I back up is a mechanical ascender. Never trust anything mechanical with your life. Other than that don't skip inspecting your kit. Check your knots, check your lines for flat spots and separation, inspect webbing for cuts, frays, or burns, check the hardware for cracks and separation etc. If you want to back things up and it will make you more comfortable and enable your hunting experience, do it. But also read and know what your looking at.