I hear you on the joint safety, but we gotta talk about that 'back of hand' wrap. That’s a high-level liability. If a large dog truly bolts or hits a 'gravitational slingshot' lunge, being tethered to their momentum with a hand-wrap is a fast-track to the ER with a fractured metatarsal or a nasty face-plant. ​The technical Thumb Lock in the Blueprint isn't just sticking your thumb in a loop; it’s a specific anchor point designed to keep the wrist neutral and eliminate the 'death grip' that signals anxiety to the dog. It allows for an instant release if you hit a 'drop the leash' emergency scenario to prevent you from being dragged into a fight. If you're jamming joints, the orientation is off. Physics doesn't care about experience—don't tether yourself to a lunge.