I'm pretty excited to get my hands on a SafeBlok, so in the mean time it got me thinking. Seems to me that my BackBone had some possibilities and turns out its true. I don't use it all that much for it's 'day job' and I always love tools with multiple uses. So here's how I set it up for aerial friction. Minimal friction: More friction: This wrap can be added or removed without having to reeve the rope again. Maximum friction This one has to be reeved. No way to add on the fly. More wraps are possible but I think it would be heading into twist and hockle land. Soft lock: So far it works well for medium duty rigging. I haven't dropped any logs into it yet though. The bend radius at the top isn't great but that can be managed with redirects. Pros: Simple. Bomb proof. Easily adjusted degrees of friction (without having to re-weave the rope). No Twisting or hockling (so far...). Soft lockable. Cons: Sort of heavy (Compared to a SafeBlok? Likely similar to AFB) Minimal bend radius in top eye.