I’m not sure what is said, above. My quoted words make sense
to me, but contrast with the images presented at the two URLs
given below the assertion “this is the modification …” !? What
I’ve tried and like somewhat is where the “end-bound” tail wraps
over the crossing point of the central nipping loop, and thereby
binds it (sometimes well, sometimes less than well).
As for Lee’s Locked Bwl being better, maybe that too is one more
YMMV case. I’ve tried similar such locking, with some success,
sometimes throwing in some turns to better nip the end’s exit
–but that makes for an increasingly ungainly knot!