Probably around 220lbs geared up. I've been too intimidated by the rope wrench to sit down and actually learn how it works.
Here's how it works...easy.
If you want to overcomplicate things, it's very easy to do that.
My first Rope Wrench was a hammer handle with a hole in it, and a tether. Ascend up, and before sitting down, manually engage the wrench. The Wrench simply reduced the load on the hitch by burning up that weight-energy through friction of the rope bending back and forth over a piece of wood.
Compared to what you're doing...can't be any harder, effort wise, and you can use any good stick.
Overall, if you want to unlock the full secrets of SRT climbing, there is a lot to learn. Worthwhile, IMO. SRT basics, pretty easy to start, and build. What is the big looming thing you feel like you have to learn about the RW? Nowadays, you can buy one set up with a stiff tether, which is simpler than me taping a stick to my tether, as the system progressed, pre-stiffy tethers. ahh, ya, you can tape a stick stiffy to a rope tether on a stick with holes in it. Black Magic, or whatever color of electrical tape floats your boat.
. Nice shot of descending that broken limb.
