equalizing

I'm getting 2 canopy-anchors for heavy-duty rigging, one's the X Rings 3-ringed (2 large, 1 XL rings), 5', 3/4" sling, but that's crotches-only (unless I use a prusik or two to choke it, still waiting to find if that's OK to do!), but want to make something out of the Safebloc, the way I see it...