Got the Whoopie Hooks, but I'm a bit dense about knots. I get what a larks head is (girth hitch), but I don't understand the instruction on the enclosed card to "turn it back" to make a square knot.

I put the treehugger around the back of the tree, and then just fed the fixed loop end of the sling through the two end loops of the webbing tree-hugger, then passed the sling through the fixed end loop to larks-head the sling to the strap. I didn't see how it could be "turned back." Maybe someone could explain it or show me video?

It didn't seem to matter. I hung just fine. But I don't want to cause undue stress on any part that I shouldn't.